The glossary for our website

3M Acetate Fabric Tape - Types 11-28 are elastic electrical insulation tapes for covering coils.
The tapes are printable and, thanks to their adaptable woven backing material, are particularly suitable for windings and irregular surfaces.
Type 11 is black, Type 28 is white, allowing for different visual identification depending on the application.

3M Type 12 and 16 paper electrical insulation tapes are primarily used for winding insulation and bandaging coils.
Type 12 is solvent-resistant, tensile-strength, and features an adhesive with high shear strength; Type 16 is elastic and suitable for cover and winding head bandaging.
Paper-based electrical insulation tapes are also highly impregnable and are therefore particularly well-suited for traditional winding processes and transformer construction.

3M Epoxy Film - Types 1, Super 10, and Super 20 are rugged electrical insulation tapes with high electrical breakdown and puncture resistance.
Depending on the version, they are flame-retardant, solvent-resistant, elastic, and temperature-resistant, and are easy to work with.
Typical applications include coil coverings, interlayer insulation, cable bundling, and top, end, and cross-wrap insulation in transformers.

Glass-fiber-reinforced polyester films combine the electrical insulation properties of polyester with the high mechanical strength of glass fibers.
Depending on the specific grade, 3M Types 46, 1039, 1046, 1076, 1139, and 1339 are characterized by high tensile and shear strength as well as good solvent resistance.
They are particularly suitable for wrapping and securing coils, cables, and transformers, as well as for applications subject to high mechanical stress.

3M electrical insulation tapes made of polyester film are thin, electrically insulating adhesive tapes for coils, connecting wires, and electrical assemblies.
Types 5, 54, 56, 74, and 57 differ, among other things, in film thickness, temperature resistance, and electrical properties.
They are used to secure lead wires, provide interlayer insulation, and as cover wraps for coils; some variants are transparent, allowing for visual inspection of the contact configuration.

3M Polyester Laminate—Types 44, 44DA, 44TA, 44HT, and 55— are durable electrical insulation tapes with high mechanical and electrical strength.
Depending on the version, they offer puncture, tear, and abrasion resistance, good creep resistance, and high adhesive strength.
They are used in particular for insulating, securing, and wrapping motors, coils, and transformers, as well as for edge and cross-wrap insulation.

Electrical insulation tape made of polyimide film is a high-temperature insulation tape designed for winding, covering, and insulation applications under continuous high thermal stress.
It remains dimensionally stable, is suitable for soldering processes, and, depending on the version, achieves a temperature rating of up to 180 °C and a dielectric strength of up to 7.5 kV.
Available 3M types include 92, 98C-1, 1205, and 1218, which are used for coils, capacitors, and cable bundles, among other applications.

PTFE film electrical insulation tape offers stable electrical and physical properties across a wide temperature range and is suitable for demanding insulation applications.
3M Types 60, 61, and 62 differ, among other things, in film thickness, dielectric strength, and adhesion; Type 61 is specifically designed for applications requiring high dielectric strength.
Typical applications include coils, capacitors, and cable bundles, particularly in environments with elevated temperatures and high electrical requirements.

AC/DC converters ( 100-180 W,700 V GaN switches, DFN8×8) as well as non-isolated types— HV BUCK (650-700 V, 5-500 mA), HV-LDO (＜15 mW standby), FLYBACK ( 6-20 W)—in SOP8/DIP8 packages for switching power supplies, LED drivers, industrial automation, and smart home applications.

Actuators convert electrical voltage into precise mechanical movement. In piezoelectric versions, this is achieved by the inverse piezo effect in PZT ceramic. Rotima offers Piezo Haptic Actuators(30-1250 pF, designs from 2.5×0.5×0.3 mm) and Haptic Feedback Actuators with displacements of 12-120 µm at operating voltages from -15 to +200 V. Stripe Actuators from APC International complete the portfolio for dosing and valve control in medical technology, HMI and OEM systems.

Adjustment potentiometers , also known as trimmers or Trimpot®, are adjustable miniature resistors with a cermet or wire-wound resistor element that are operated with a screwdriver for one-off or occasional circuit adjustment. Single-turn types with direct drive are suitable for quick coarse adjustments, multi-turn types (up to 25 turns) for higher resolution. Rotima carries Bourns® Trimpot®, 10 Ω-2 MΩ, THT and SMD for precision calibration in measurement, medical and industrial electronics.

Air-core coils are coreless inductors made of wound enameled copper wire without a ferromagnetic core. This results in no saturation effect, low losses, and a high self-resonant frequency (SRF). Rotima manufactures enamel-coated coils from thermoplastic wire (Ø 0.015-1.0 mm), single-wire and bifilar, with RF strands, assembled in shell cores; mini enamel-coated coils starting at an inner diameter of 0.70 mm, produced fully automatically for HF circuits, resonant circuits, RFID, and induction applications.

All-in-one AC-DC converter starting at 150 mΩ, in a DFN8×8 package, for industrial control systems, medical technology, and photovoltaic systems.

Amorphous materials are soft magnetic materials with a non-crystalline structure that enable very high magnetic drive while maintaining low losses.
According to ROTIMA, Metglas® strips and AMCC cores achieve a magnetic flux density of over 1.56 T, losses of 13 W/kg at 10 kHz and 0.2 T, and operating frequencies up to 100 kHz.
Typical applications include PFC chokes, switching power supplies, UPS systems, common-modechokes, and magnetic amplifiers.

Sound components are acoustic devices that generate warning, signal, and feedback tones in electronic devices.
They are often based on piezoelectric technology and are available as active versions with integrated drive circuits or passive versions for external signals.
Typical applications include industrial automation, safety and warning systems, the automotive industry, and battery-powered electronics.

Autotransformers, also known as step-down transformers, are used to efficiently match electrical voltages and do so by using a single winding for both the primary and secondary sides.
Because they use less copper and iron, they are more compact, lighter, and highly efficient, especially when dealing with small voltage differences.
Typical applications include power supply, industrial systems, voltage regulation, and renewable energy systems; however, there is no galvanic isolation between the input and output.

Coils made of thermoplastic wire with a diameter of 0.015-1.0 mm are permanently bonded by melting the enamel coating—for example, using hot air, an electric current pulse, an oven, or a hydrogen flame. ROTIMA manufactures them to customer specifications with single or bifilar windings,HF strands, and, upon request, assembled on shell cores. Mini enamel-coated coils with an inner diameter of 0.70 mm or larger can be produced fully automatically.

An Bipolartransistor mit isolierter Gate-Elektrodecombines the voltage-controlled control of a MOSFET with the current-carrying capacity of a bipolar transistor. Rotima offers the BID series from Bourns with trench-gatefield-stop technology: VCE up to 650 V, IC up to 75 A @ 100 °C, VCE(sat) from 1.35 V in TO-247 and TO-252, for SMPS, UPS and PFC circuits, operating temperature -55 °C to +175 °C.

Braided sleevings are braided protective sleevings made of PET and polyolefin to protect cables and wires from mechanical abrasion, heat and electromagnetic interference. Rotimas types operate continuously from -40 °C to +125 °C, shrink 2:1 from approx. 120 °C and are self-extinguishing within 60 s for industrial cable assemblies, electrical cables and control cabinet installations.

Capacitors store electrical energy in an electric field between two electrodes and are used for voltage smoothing, filtering, and energy storage. Rotima carries four types: electrolytic capacitors ( screw terminals, snap-in, SMT, radial, polymer), MKP/MKTfilm capacitors from AIC Europe and Okaya, MLCCceramic capacitors (NP0, X7R, X5R, Y5V), and tantalum capacitors, including the hybrid HTHC series —all from Hongda Capacitors, ISO 9001/IATF 16949 certified.

Ceramic capacitors (MLCC) consist of stacked ceramic dielectric layers with staggered electrodes. Class 1 types(NP0/C0G, ±30 ppm/°C) for precision circuits, Class 2 types(X7R ±15%, X5R, Y5V) for high capacitance density. Rotima offers Hongda series HLC (0.1 pF-220 µF, 4-100 V, sizes 0402-2225, -55 to +125 °C) and MQ(high voltage up to 7200 V, ISO9001/IATF16949) - for RF decoupling, EMC filtering and power electronics.

These certifications and standards define the safety, material, and application requirements for custom inductors, transformers, and chokes.
These include UL 94, UL 5085, UL 1446, EN 61558, and EN 60601 for fire safety, insulation, electrical safety, and medical technology.
Compliance with relevant standards and the RoHS Directive supports documented conformity and facilitates the international approval of electrical components.

Chemical hoses are designed for the safe transportation of aggressive media - acids, alkalis, solvents. Designed to withstand chemical, thermal and mechanical stress. Rotima offers variants made of PTFE, FKM fluoroelastomer, silicone, PVC and PE: pressure-resistant due to fabric reinforcement or wire braiding, temperature-stable and vacuum-resistant. Available as standard and customized high-pressure versions for chemical, laboratory and industrial systems.

Chip inductors are compact inductors for high-frequency applications that are mounted directly onto printed circuit boards.
They are particularly well-suited for 5G technology, IoT, mobile communications, and RF filters, and support stable signal processing while taking up minimal space.
ROTIMA offers, among other products, multilayer chip inductors and high-Q inductors for low signal loss and high efficiency.

Chip-Widerstände are lead-free SMD components on a ceramic carrier with a thick-film resistor layer. Rotima offers thick-film types from Hongda Capacitors in sizes 01005 to 2512 (1/32 W to 1 W), resistance ranges 0.1 Ω-100 MΩ, tolerances ±0.5-5 %, TCR ±100-500 ppm/°C. Arrays and networks according to AEC-Q200 for automotive, medical technology and industrial electronics.

Circuit protection encompasses electronic protection components that protect devices and circuits from overvoltage, overcurrent, and power surges.
These include, among others , TVS diodes, gas discharge tubes (GDTs), fuse elements, and resettable PTC fuses, which limit or divert harmful electrical stresses.
These solutions are primarily used in power supplies, communication systems, control systems, and industrial equipment to protect components and reduce downtime.

Coil forms serve as mechanical supports for windings and enable the precise construction of coils and inductive components.
They are available in various dimensions, materials, and designs and can be combined with ferrite cores depending on the application.
They are used in electrical engineering and electronics and can also be custom-designed to meet various technical requirements.

Coil inductors are wound inductors for signal stabilization, EMC filtering and energy storage in DC-DC converters and RF circuits. Rotima offers series of Hongda Capacitors: Whole-Shield types(HDCDH, HDSFD, HDSL) with inductances from 1-1000 µH, DCR from 4.7 mΩ, Isat up to 28 A as well as unshielded CD types(HDSD) for compact layouts. Test frequencies 1-100 kHz, RoHS-compliant.

Coils are electrical components made of wound conductor wire that store magnetic energy, filter signals, or transmit energy.
Depending on their design, various types of coils—including air-core coils, enamel-coated coils, and coils with bobbin bodies —are used to meet different electrical and mechanical requirements.
Typical applications include electrical engineering, electronics, high-frequency technology, and power transmission, with the design tailored to frequency, power, and form factor.

Connectors establish removable electrical connections between devices, assemblies, and components, reliably transmitting power or signals.
They typically consist of a housing, contacts, and insulating materials and, depending on the application, are designed as robust industrial, power, or signal connectors.
Typical areas of application include automation, mechanical engineering, electric mobility, telecommunications, and power supply.

3M copper EMC shielding films are used for electromagnetic shielding, grounding, and dissipating electrostatic charges.
Depending on the type , they feature conductive, non-conductive, or double-sided conductive acrylic adhesives; variants with a tin coating additionally offer good solderability and oxidation resistance.
The copper foils are highly puncture-resistant and are therefore particularly well-suited for precise shielding and interconnection solutions in electronic assemblies.

The cross-section of an electrical conductor, specified in mm², determines its current-carrying capacity and electrical resistance: the larger the cross-section, the lower the voltage drop per meter. Rotima supplies flat and round copper ETP braids (99.9 % Cu, max. 1.7241 µΩ-cm at 20 °C) in cross-sections of 2-500 mm² as well as aluminum braids(61.5 % IACS) for earthing, equipotential bonding and EMC shielding in electrical engineering and industrial systems.

Current-measuring resistors (shunts) are low-resistance precision resistors used to accurately measure electric currents based on the resulting voltage drop.
They are often made of precision alloys such as manganin, aluchrom, or nickel-chromium, which provide low temperature coefficients and high long-term stability.
Designs such as the four-wire Kelvin technique help reduce the effects of lead and contact resistance and allow for the reliable measurement of even high or dynamic currents.

Current sensors measure the electrical current in real time. With shunt-based technology via the voltage drop across a low-ohm measuring resistor (U = R - I), with Hall-effect sensors contactless via the magnetic field of the conductor. Rotima offers Bourns® current sensors in analog and digital versions, temperature compensated - for battery management, EV charging stations, switching power supplies and industrial energy monitoring.

Current transformers are used for the precise measurement and monitoring of electrical currents and convert the current to be measured into a quantity suitable for measuring and evaluation devices.
They are available in standard and custom designs and can be adapted to different current ranges, installation situations, and industrial requirements.
Typical applications include industrial plants, power grids, high-voltage switchgear, wind turbines, and medical devices.

Custom inductors are designed and manufactured precisely to meet the electrical, mechanical, and safety requirements of a specific application.
These include , in particular ,transformers, chokes, and coils, whose power rating, size, and electrical properties are individually tailored to the respective system.
They are primarily used in industrial electronics and electrical engineering when standard components do not meet the required technical specifications.

Direct voltage converters (DC-DC converters) convert one direct voltage into another. Using PWM-controlled MOSFET switching with energy storage in inductive components.Step-up convertersincrease and step-down converters reduce the voltage; efficiencies of over 95 % can be achieved. Rotima offers DC converters from Bourns for industrial controls, medical technology, automotive and mobile electronics, as standard and customized versions.

Interference suppression capacitors are special capacitors designed to suppress electromagnetic interference and high-frequency interference signals in electrical and electronic circuits.
They contribute to a stable power supply and improved electromagnetic compatibility (EMC) and protect connected components from disruptive voltage spikes.
Typical applications include household appliances, industrial equipment, power supplies, and switching power supplies, as well as other applications with increased requirements for interference suppression.

The development and manufacture of custom inductors encompasses the entire process chain, from design and FEM simulation to mass production.
Electrical, thermal, and mechanical properties are precisely calculated and validated using methods such as X-ray analysis, vacuum impregnation, and potting.
The design complies with relevant EN, IEC, and UL standards and enables the creation of robust, standards-compliant components for industrial and safety-critical applications.

Diodes are p-n junction semiconductor devices that conduct current in the forward direction and block current in the reverse direction. Rotima offers chip diodes from Bourns(AEC-Q100, JEDEC-compliant, RoHS): small signal diodes in 0603/1005 with Cu/Ni/Au connections, Schottky, Zener and high-speed switching diodes in SOT23 to SMC packages as well as Power TVS diodes with surge current capability up to 15 kA for overvoltage protection.

Earthing straps are fine-stranded copper or aluminum braids for equipotential bonding, protective conductor connection and EMC earthing. Rotima offers Cu-ETP types(99.9 % Cu, max. 1.7241 µΩ-cm at 20 °C) as flat, round, extra-flex and PBFC braids as well as aluminum braids (EN 1715-2, 61.5 % IACS, -50 °C to +100 °C) - bare or tinned, in cross-sections 6-120 mm², UL-certified according to UL 467.

EI transformers are based on a core constructed from E- and I-shaped electrical steel laminations—cost-effective and proven for 50/60-Hz applications. Rotima manufactures the PE and PEV (encapsulated) series, PES (shielded), and WEK in core sizes ranging from 30 to 150 mm according to customer specifications: defined turns ratios, insulation classes B through H, for switching power supplies, control systems, and medical technology in accordance with IEC 60076.

Electrical connections are used to safely and efficiently transmit high electrical currents between components, assemblies, and systems.
These include , among other things , flexible busbars, power connections, and welded shunts made of highly conductive copper for various power requirements.
These designs are engineered for industrial electrical applications and offer high conductivity, mechanical flexibility, and reliable contact quality.

Electrical insulating tapes insulate electrical conductors, tape coils and shield against EMC. Rotima stocks the 3M range: PTFE film up to 15 kV / 180 °C, polyimide film (0.025 mm) up to 7.5 kV / 180 °C, PVC film up to 12 kV, glass fabric tape up to 3 kV / 200 °C. Plus EMC shielding foils made of copper and aluminum as well as electrically conductive fabric tapes - UL, CSA and IEC certified.

PVC film electrical insulation tape is suitable for general insulation, repair, and labeling tasks in electrical installations and control panel construction.
Depending on the version, the 3M Scotch® 22, Super 33+, Super 88, and Scotch® 35 types offer high abrasion resistance, moisture and UV resistance, or color-coded identification.
The tapes are used , among other things , for cable jacket repairs, electrical insulation up to 1 kV, and for phase and wire marking.

3M's electrically conductive fabric tapes are made of nickel-copper-coated polyester fabric with a conductive acrylic adhesive.
They are lightweight, flexible, and oxidation-resistant, and provide excellent electrical grounding and shielding performance.
Types 2191FR and CN3190 are particularly suitable for EMC shielding, grounding, and precision die-cut parts in electronic applications.

Electrolytic capacitors are electronic components with high capacitance values and a relatively compact design; they are used, among other things, for energy storage, smoothing, and voltage stabilization.
They are used in particular in power electronics, power supplies, frequency converters, industrial electronics, and automotive applications.
Depending on the application, various package types are available, such as screw-terminal, snap-in, SMT, radial, and polymer electrolytic capacitors.

Electromagnetic interference (EMI) filters reduce unwanted electromagnetic interference and thereby improve the electromagnetic compatibility of electronic devices and systems.
They are available as single-phase and three-phase filters, DC filters, and custom solutions for various electrical and design requirements.
Typical applications include automotive technology, medical technology, industrial electronics, and consumer electronics, where low-interference and reliable systems are required.

Electronic components are passive and active devices used to control, convert, and filter electrical signals and power. Rotima carries resistors (chip, wire, shunt), capacitors (MLCC, electrolytic, tantalum), inductors, GaN ICs, IGBTs, diodes (AEC-Q100), sensors, actuators, and circuit protection —from Bourns, VPG Foil Resistors, Hongda Capacitors, and Dongke Semiconductor.

Electronics manufacturing equipment includes components and materials used in the production, assembly, shielding, and maintenance of electronic devices.
These include , among other things ,metal mesh, stranded wire, ferrites, connectors, temperature switches, and electrical insulation tape.
They are primarily used in electronics and electrical engineering and are available both as standard products and in custom designs.

EMC filters are electronic components or filter circuits designed to suppress electromagnetic interference (EMI) and improve the electromagnetic compatibility of electrical devices.
They attenuate unwanted high-frequency interference signals while leaving the desired signals or supply voltages as unaffected as possible.
Typical designs include power line filters andradio frequency (RF) interference filters, which are used in industrial systems, medical technology, telecommunications, consumer electronics, and automotive engineering.

Aluminum EMC shielding foil dissipates electrostatic charges, grounds assemblies, and shields against electromagnetic interference. Rotima carries three 3M types: Film 1170 (0.081 mm, conductive acrylic adhesive, 10 MΩ), embossed Film 1267 (0.127 mm, non-conductive, 5 MΩ), and polyester-coated AL-36FR (0.061 mm, solvent-resistant, 20 MΩ), all of which are easily die-cut for automated manufacturing.

Encoders are digital rotary encoders that convert rotary motion into TTL/CMOS pulses via contacting, magnetic or optical sensing. Rotima offers Bourns series: Contacting(PEC/ECW, 9-22 mm, 6-36 PPR, IP40/IP67), Optical(EM14/EN/ES14, 8-256 PPR, up to 3000 rpm), Magnetic(EMS22, 32-1024 PPR, up to 10,000 rpm, IP65, 50-100 million revolutions) for HMI, motor control and industrial automation.

Cold-shrink tubing made of EPDM and silicone consists of mechanically pre-stressed elastomer tubing designed for electrical insulation and permanent sealing of cables and connections.
They shrink to the desired diameter through elastic recovery without the use of heat or thermal tools and provide electrical insulation up to 1 kV.
EPDM is suitable for rugged standard applications, while silicone cold-shrink tubing is used particularly where higher thermal and chemical requirements apply.

EPDM cold-shrink tubing, made of ethylene-propylene-diene rubber, consists of pre-stressed elastomer sleeves that automatically conform to the surface after the support spiral is removed, without the need for a heat source. Temperature range: −40 °C to +90 °C, shrink ratio 2:1, insulation up to 1 kV, resistant to UV, ozone, and moisture. Rotima supplies 3M products for power engineering and telecommunications—for cable joints, connectors, and outdoor installations where the use of heat is not an option.

Fabric shrink sleeves combine a polyolefin inner jacket with woven-in PET synthetic fibers. The hybrid structure provides electrical insulation and extreme abrasion protection against vibration and friction. Material PET & polyolefin, shrink ratio 2:1 from approx. 120 °C, continuous operation -40 °C to +125 °C, self-extinguishing within 60 s. Rotima supplies these for cable assembly, vehicle technology and NVH-relevant cable protection applications.

FEP/EFEP double-wall heat-shrink tubing consists of two fluoropolymer layers and is used for electrical insulation and the long-term protection of cables and wires.
At a shrink temperature of approximately 200 °C, the inner EFEP layer liquefies and reliably seals the enclosed component.
They offer high resistance to chemicals and high temperatures and are particularly suitable for industrial applications with high requirements for insulation, sealing, and cable protection.

FEP heat-shrink tubing made of fluoroethylene-propylene combines high transparency, excellent chemical resistance, and reliable electrical insulation.
Depending on the model, they are suitable for temperatures up to approximately +200 °C and are available, among other options , with shrink ratios of 2:1, 1.3:1, and 1.6:1, as well as in low-temperature and double-wall versions.
Typical applications include medical technology, electronics, the chemical industry, semiconductor technology, aviation, and industrial sensor technology—particularly where visual inspection and media resistance are required.

FEP heat-shrink tubing with expansion ratios of 1.3:1 and 1.6:1 is used for insulation and mechanical protection of cables, wires, and electronic components.
They are flexible, chemical-resistant, UV-resistant, and temperature-resistant from approximately −200 °C to +200 °C, making them suitable for demanding environments.
Typical applications include industry, electronics, mechanical engineering, and medical technology; the 1.6:1 ratio allows for greater adaptability to different diameters and contours.

FEP Heat-Shrink Tubing 110°C is a fast-shrink tubing made of fluoroethylene-propylene that shrinks at temperatures as low as approximately 110 °C, thereby protecting temperature-sensitive components.
It offers high electrical insulation, chemical and weather resistance, and is available in various diameters and wall thicknesses up to 1.5 mm.
Typical applications include medical technology, electronics, and cable insulation, particularly for protecting wires, connectors, sensors, and sensitive assemblies.

FEP heat-shrink tubing (2:1 ) is transparent fluoroplastic tubing used to insulate and protect cables, wires, and sensitive components.
They offer high chemical resistance, excellent electrical insulation, and temperature resistance up to approximately +204 °C with a shrink ratio of 2:1.
Typical applications include industry, medical technology, electronics, and outdoor applications where transparency, UV resistance, and reliable protection are required.

FEP hoses are made of fluorinated ethylene propylene and are particularly suitable for transporting acids, alkalis, and organic solvents.
They are chemical-resistant, temperature-resistant up to approximately 200 °C, and available in wall thicknesses ranging from 0.10 to 2.00 mm.
Typical applications include electrical engineering, electronics, chemistry, and industrial process engineering, where high resistance to media is required.

FEP roller coatings with shrinkage are protective coatings made of fluorinated ethylene propylene that are shrunk firmly and evenly onto rollers when heated.
They offer corrosion protection, chemical resistance, and heat resistance, and can reduce wear and stress on the roller surface.
Typical applications include printing rollers as well as rollers in the textile and food industries or equipment exposed to aggressive media.

Ferrite cores are sintered ceramic components made of iron oxide and metal oxides with high permeability and low electrical conductivity and therefore low eddy currents up to the MHz range. MnZn ferrites ( µr 2000-15,000, up to 1 MHz) are suitable for switching power supplies and chokes; NiZn ferrites (µr 10-1500, up to 100 MHz) for EMC filters and HF. Rotima stocks cores from Kaschke Components, Proterial Europe and Samwha Electronics in EE, RM, PQ, toroidal and planar designs.

Ferrites are ceramic magnetic materials used in high-frequency, power, and EMC applications in electronics and electrical engineering.
Among other things , they are used as toroidal cores, rod cores, and E-shaped cores in transformers, chokes, and filters.
Ferrites help reduce electromagnetic interference, improve signal transmission, and enable energy-efficient power conversion.

Film capacitors consist of two metal layers with plastic film as dielectric. Polypropylene(MKP) up to 1000 V AC with low tan δ and self-healing effect, polyester(MKT) up to 630 V AC. Typical service life 100,000-200,000 h; according to the 10°C rule, it is halved for every 10 K increase in temperature. Rotima stocks high-pulse, interference suppression and spark-killer capacitors from AIC Europe and Okaya for power electronics, EMC and motor controls.

Film capacitors from AIC-Europe are designed for demanding applications and feature low ESR and high ripple current handling capability.
They offer high voltage withstand capability and a long service life, making them suitable for power-intensive electronic and industrial applications.
Depending on the product series, various electrical specifications and package types are available; versions with segmented foil are available as an option for added safety.

Fine wires are individually enameled copper wires with diameters less than twice the skin depth of the operating frequency. This design drastically reduces eddy current losses and proximity effect from 20 kHz. At 100 kHz, the optimum wire thickness is less than 0.10 mm. 50-500 individual wires reduce the AC resistance by a factor of 5-10 compared to solid wires. Rotima supplies PACK Litz wire fine wires in accordance with DIN EN 9001 for switching power supplies, resonant converters and inductive charging coils.

Fluoroplastic hoses are high-performance hoses with very high chemical and temperature resistance for demanding industrial and technical applications.
Depending on the material, versions made of FEP, PFA, or PTFE are available, as well as various heat-shrink tubing options to meet different temperature, media, and purity requirements.
They are particularly suitable for medical technology, microelectronics, analytics, chemistry, and electronics, as they are durable, hygienic, and easy to clean.

Food hoses are designed for the safe transport of food and beverages - made of food-safe, odorless and tasteless materials without harmful migration. Rotima offers five types: Silicone tubing(FDA-certified, BPA-free, for dairy and beverage processing), fluoroplastic tubing, protective tubing, heat-shrink tubing and specialty tubing - all compliant with FDA 21 CFR and EU Regulation 10/2011, CIP-cleanable.

GaN AC-DC converters are highly efficient power supply ICs based on gallium nitride (GaN) that convert AC voltage into regulated DC voltage.
They enable high switching frequencies, compact designs, and low energy losses, making them particularly well-suited for modern power electronics.
Typical applications include fast chargers, electric vehicles, Industry 4.0 systems, 5G, and telecommunications technology.

Glass fabric tape isa tear-resistant, elastic insulating adhesive tape on a glass fabric backing, with a temperature resistance of up to 200 °C and a breakdown voltage of 3.0 kV, and a tear strength of up to 314 N/10 mm. Rotima carries three types of 3M fiberglass tape: 27, 69, and 79 (abrasion-resistant, printable), 69 (flame-retardant adhesive for high-temperature applications), and 79 (solvent-resistant), UL, CSA, and OANZ2 certified for cable fastening, coil wrapping, and transformer insulation.

High-performance and specialty solutions are specially designed electrical connections and protective components for applications involving high temperatures, vibrations, or extreme environmental conditions.
These include, among other things , bonding straps, Nomex® protective tubing, braided tubing, andmicro-shunts that offer high flexibility and reliable electrical performance.
They are used in particular in the aerospace, rail, automotive, and renewable energy sectors when standard solutions are insufficient.

High-pulse capacitors are film capacitors that release stored energy in short, powerful pulses. With low ESR, low ESL and self-healing effect in the event of micro-damage. Rotima carries Okaya series: HCP-S(450-1250 V, 0.01-68 µF), C1NP(250-1250 V), snubber types CF99/CF78 (630 V) and AFV/AFC/AFP(450-630 V) for laser technology, lithotripters, pulse generators and welding systems.

Hose braids are flexible, hose-shaped braids used for EMC shielding and mechanical protection of cables and wires.
Depending on the application, they are made, for example, of tinned copper or polyamide and are available in various diameters, wire gauges, and braided configurations.
They are suitable for electrical and electronic applications that require reliable shielding against electromagnetic interference or robust cable protection.

Hose technology encompasses technical hoses used for protection, insulation, routing, and transport in industrial, electrical, and electronic applications.
The product range includes , among other things ,industrial hoses, chemical hoses, food-grade hoses, heat-shrink tubing, and PTFE hoses in various materials, sizes, and temperature ranges.
ROTIMA offers both standard designs and custom hose solutions for a variety of technical requirements.

Humidity sensors measure relative humidity capacitively. A moisture-sensitive polymer changes its dielectric constant in proportion to the water vapor concentration, which can be measured as a change in capacitance. Rotima offers Bourns® capacitive humidity sensors with high measurement accuracy, long-term stability and miniature design for control cabinet monitoring, climate control, server rooms, medical technology and automotive electronics.

Hybrid-Tantalkondensatoren combine a tantalum anode with a Ta₂O₅ dielectric with a conductive polymer or liquid electrolyte. This results in lower ESR than classic tantalum types, higher current carrying capacity and longer service life. Rotima offers Hongda HTHC series(10-125 V, 160 µF-230,000 µF, ESR 0.03-0.6 Ω at 1 kHz, ISO9001/IATF16949) for ADAS, battery management systems, DC/DC converters and medical technology.

Impeder cores are soft-magnetic ferrite cores used to concentrate and guide the magnetic flux during high-frequency pipe welding.
The K2006 power ferrite used offers a high Curie temperature, high flux density up to 150 °C, and low losses in the frequency range up to 500 kHz.
The cores improve welding speed, seam quality, and energy efficiency, and are available in various rod and hollow cylinder shapes.

Inductors (shielded, Isat up to 28 A, DCR from 4.7 mΩ), coil inductors for SMD layouts as well as transformers & transformers for DC-DC converters, EMC filters and RF circuits.

Custom inductors are specially designed magnetic components that are individually tailored to electrical characteristics, design, and operating conditions.
Depending on the requirements, components such as coils, chokes, and transformers are optimized in terms of inductance, current-carrying capacity, insulation, and dimensions.
They are suitable for industrial electronics, power supplies, and specialized technical applications where standard solutions are insufficient.

Industrial connectors are robust electrical connection elements for power, signal and data transmission under demanding conditions. With IP protection classes up to IP68, 500-10,000 mating cycles and contact materials made of CuSn/CuBe with gold (0.5-2.5 µm), silver or tin plating. Rotima carries Anderson Power Products (APP®): Powerpole PP15-PP180, Multipole SB 50-SB 350 and Compact PowerMod series for telecommunications, electromobility and photovoltaics.

Industrial hoses are technical hoses designed for a wide range of applications, such as pneumatics, hydraulics, and chemical transfer.
The product range includes, among others , heat-shrink, silicone, hydraulic, pneumatic, chemical, fluoroplastic, protective, and specialty hoses.
Depending on the model , they offer high resistance, flexibility, and durability for demanding industrial operating conditions.

Industrial silicone hoses are flexible, peroxide-cured hoses designed for demanding applications in industry, mechanical engineering, laboratory technology, and food processing.
They are designed for a temperature range of -60 °C to +200 °C, with short-term exposure up to +220 °C, and have a hardness of 60 ±5 Shore A.
The hoses comply with FDA §177.2600, BfR XV, and EC 1935/2004, among other standards, and are available in various diameters, wall thicknesses, and colors.

Input/output components, switches, thermistor heaters, LED-related products, and transducers for HMI, medical technology, and industrial control systems.

PA-12 hoses are extruded thermoplastic hoses with low moisture absorption, high abrasion resistance and excellent chemical resistance to oils, fuels and hydraulic fluids(SAE J844). Operating temperature -40 °C to +80 °C, burst pressure up to 80 bar at 6 mm OD / 1 mm wall thickness, continuous operating pressure 16-20 bar at 23 °C, ISO 9001 and RoHS. Rotima supplies PA-12 hoses for pneumatics, hydraulics, vehicle technology and measurement/control technology.

Integrated circuits (IC) integrate active and passive functions - switching, regulating, rectifying - on a single semiconductor chip. Rotima stocks AC-DC converter ICs from Dongke Semiconductor: All-IN-ONE(GaN, 100-180 W, 700 V switch, DFN8×8), GaN converters, primary and secondary side controllers as well as synchronous rectifiers and synchronous rectifier controllers for switching power supplies, photovoltaics and industrial controllers.

Isolation transformers transmit electrical energy while providing galvanic isolation between the primary and secondary circuits, thereby enhancing electrical safety.
They are used to safely decouple circuits, reduce interference and leakage currents, and reliably supply power to loads.
Typical applications include industrial plants, control systems, test benches, and control panel technology, with voltage, power, insulation requirements, and design adapted to the specific application.

Schrumpfschläuche (Kynar®)'＞PVDF heat-shrink tubing (Kynar®) consists of thin-walled, high-performance tubing that offers excellent resistance to abrasion, cuts, and chemicals, while also providing reliable electrical insulation.
They have a shrink ratio of 2:1, are rated for temperatures ranging from −55 °C to +175 °C, and offer a dielectric strength of 11 kV/mm.
Typical applications include the aerospace industry, the automotive industry, medical technology, and the protection of sensors, cables, solder joints, and connectors.

LED-related products include compact lighting, display, and signaling solutions for industrial applications and electrical devices.
These include, among other things , 7-segment displays, LED indicators, and circular, bar, and tubular lights for various installation and lighting tasks.
The products are designed for a long service life, robust construction, and reliable operation, and, depending on the model, offer protection ratings such as IP64 as well as PFC and surge protection.

Light sensors detect light without contact using an infrared LED as a transmitter and a photodiode as a receiver. Transmissive photointerrupters (RPU) detect beam interruptions - for paper flow and banknote detection; photo-reflectors detect reflected light for barcodes and edge detection; infrared LEDs (RLD) serve as an encoder light source. Rotima offers all three series from Okaya Electric Industries for industrial automation and printing technology.

Mains interference suppression filters suppress conducted EMI interference in the power grid through impedance matching: passive LC networks consisting of capacitors(Y/Pi filters), inductors and ferrite cores offer high impedance for RF interference and low impedance for the mains voltage. They filter switching interference from power supply units and switching regulators and ensure EMC conformity. Rotima offers standard and customized Bourns® line noise filters for industrial automation, medical technology and telecommunications.

The manufacturing and development of custom inductors ranges from technical design and FEM simulation to mass production.
Depending on the requirements, quality assurance procedures such as X-ray analysis, vacuum impregnation, and potting are used.
Development and production are guided by relevant EN, IEC, and UL standards, resulting in robust components precisely tailored to the application.

MedTech silicone tubing is biocompatible, flexible, and sterilizable tubing designed for medical and laboratory applications.
They are suitable for use in medical devices, surgical instruments, and laboratory equipment, among other applications, and are available in various diameters and designs.
The material is heat-resistant, chemically inert, and durable, thereby meeting the high standards for hygiene and reliability in medical technology.

Membrane keyboards are flat, flexible input devices consisting of several functional layers with a graphical interface and conductive switching layers.
They are resistant to moisture, dust, chemicals, and mechanical stress, and can be equipped with tactile feedback, LEDs, viewing windows, or EMC protection.
Typical applications include industrial electronics, medical technology, machine and equipment manufacturing, and measurement and analysis technology.

Metal meshes are braided structures made of metal threads, as flat braid (2-500 mm², Ø 0.10-0.20 mm) or round braid (2-300 mm², Ø 0.10-0.25 mm) for earthing, EMC shielding and power connections. Rotima offers Cu-ETP types according to NF EN 13602 (99.9 % Cu, max. 1.7241 µΩ-cm at 20 °C, min. 200 MPa) as well as stainless steel and aluminum variants. Bare, tin-plated, silver-plated or nickel-plated. For electrical engineering, aviation and clean room technology.

M-transformers are based on a core made of M-shaped laminated steel sheets that reduce magnetic stray flux and minimize heat generation—making them particularly low in stray fields and highly efficient. Rotima manufactures the PM and PMD (42 mm) series to customer specifications, PMS and PMDS ( 55-102 mm), PMV (42-74 mm), and SM and SMD ( 55-102 mm, with exceptionally low stray fields) for power supplies, galvanic isolation, and impedance matching at 50/60 Hz.

Variators consist of many stacked MOV layers made of zinc oxide ceramic - when the response voltage is exceeded, the resistance drops abruptly and dissipates transients. Compact design( 2220package ) with Imax 2 kA allows it to outperform larger single layer MOVs (4032, Imax 1200 A); operating voltages typically below 200 V at 1 mA. Rotima carries MLVs from Bourns® for mobile devices, miniature applications and sensitive low-voltage electronics.

Nanocrystalline materials are soft magnetic materials with high saturation flux density, high permeability, and stable temperature characteristics.
FINEMET®, developed by Proterial Europe, is particularly well-suited for suppressing electromagnetic interference and for energy-efficient magnetic components.
Typical applications include EMC components, inductors, transformers, and high-frequency systems that require low losses and high magnetic performance.

Electromagnetic interference (EMI) filters reduce unwanted electromagnetic interference in electrical and electronic systems, thereby supporting electromagnetic compatibility (EMC).
They are available, among other things, as radio frequency interference filters, power line interference filters, and custom filter solutions for various frequency ranges and types of interference.
Typical applications include industrial automation, medical technology, telecommunications, and electric drive systems, where sensitive electronics must be protected from interference.

Nicht-isolierte AC-DC Wandler convert AC mains voltage directly into DC voltage without galvanic isolation. Via rectifier, filter and switching regulator. Rotima carries Dongke series: HV-BUCK (DK503/5320/5360/5511/5512/5522-5524, 650-700 V, RDS(ON) 3.6-18 Ω, 5-500 mA), HV-LDO (DK5030-5032, standby), BUCK/BUCKBOOST/FLYBACK (DK5502/5503, 6-12 W) and Non-isolated Flyback (DK5710, 20 W) - in SOP8/DIP8/DIP7 for LED drivers, industrial automation and smart home.

Off-board are current measuring resistors mounted externally to the main circuit for high-current applications. With superior heat dissipation due to large-format design and heat sink connection. Rotima carries SBY/SBL/SBZ series from Shivalik Bimetal Controls: resistors 0.025-1 mΩ, frame sizes 3515-8518, power ratings 3-36 W, tolerance ±5-10 %; electron beam welded from manganese/copper for EV battery systems, industrial controls and smart grid applications.

Off-board current-sensing resistors (shunts) are low-resistance precision resistors used to measure high currents outside the printed circuit board.
They are integrated directly into the current path and generate a precisely defined voltage drop, from which the flowing current can be reliably determined.
Typical applications include power electronics, power supplies, battery and charging systems, and industrial high-current applications.

On-board resistors generate a measurable voltage drop proportional to the flowing current (U=R-I) and are integrated directly on the circuit board. Rotima stocks SBA-SBJ series from Shivalik Bimetal Controls: resistors 0-50 mΩ, sizes 1206-5930, power ratings up to 15 W, tolerances ±1-5 %; joined by electron beam welding and diffusion bonding of manganese/copper - for BMS, automotive and energy measuring devices.

On-board current-sensing resistors (shunts) are compact, precision resistors designed for direct current measurement on printed circuit boards and in electronic assemblies.
They enable precise, low-loss current monitoring and are used in applications such as battery management systems (BMS), vehicle electrical systems, and on-board chargers.
ROTIMA offers on-board shunts in various resistance ranges, sizes, and power classes, as well as custom solutions for industrial and automotive applications.

Electronic component protectors from the LSP series prevent the total failure of an LED string in the event of a defective individual diode: if an LED opens the circuit, the LSP automatically routes the current around the failed LED - the remaining LEDs remain active. The cost-effective alternative to conventional solutions minimizes maintenance costs. Rotima stocks Bourns® LSP for street lighting, general lighting fixtures and backlit signage systems.

Overcurrent protection interrupts or limits the flow of current when a fault current exceeds the rated capacity of components by irreversible melting (fusing) or reversible tripping. Rotima carries Bourns® types: Multifuse® PPTC(resettable, exponential resistance rise), Ceramic PTC (telecom, AC protection), SinglFuse™ SMD(0402-3812, one-time), Mini Breaker (TCO, thermal) and TBU® High-Speed Protectors (MOSFET-based) for battery packs, charging electronics, telecom and industrial controls.

PA 12 hoses are extruded polyamide hoses with high compressive strength, low moisture absorption, and good chemical resistance to oils and fuels.
They retain their shape within a temperature range of −40 °C to +80 °C and are characterized by high flexibility and abrasion resistance.
Typical applications include pneumatics, hydraulics, automotive engineering, and measurement and control technology.

PEEK heat-shrink tubing ishigh-performance heat-shrink tubing designed for extreme thermal, chemical, and mechanical stresses, as well as for reliable electrical insulation.
They are designed for continuous operating temperatures up to +250 °C and short-term temperatures up to +400 °C, and are characterized by high dimensional stability as well as resistance to chemicals and radiation.
Typical applications include aerospace, medical technology, nuclear technology, and industrial process engineering, particularly for the protection of cables, sensors, and components.

PFA heat-shrink tubing is made of high-purity fluoroplastic and is designed for extreme chemical and thermal conditions as well as for ultra-high-purity applications.
They are rated for temperatures ranging from −200 °C to +260 °C, are virtually universally chemical-resistant, and feature a non-porous, melt-processed surface with very low outgassing.
Typical applications include semiconductor manufacturing, pharmaceuticals, analytics, and process engineering—particularly for protecting sensors, probes, and fluidic components.

PFA tubing made of perfluoroalkoxy is characterized by very high chemical resistance, flexibility, and temperature resistance up to 260 °C.
They combine the chemical properties of PTFE with the mechanical advantages of FEP and offer a dielectric strength of 50-80 kV/mm.
Typical applications include medical technology, the pharmaceutical industry, trace analysis, the food industry, as well as electronics and high-voltage technology.

Pharmaceutical silicone tubing is peroxide-cured, transparent tubing designed for pharmaceutical, medical, biological, and laboratory applications.
They are designed for temperatures ranging from −60 °C to +200 °C, with short-term exposure up to +250 °C, and comply with, among others, FDA §177.2600, BfR XV, EC 1935/2004, USP Class VI, and Ph. Eur. 3.1.9.
Thanks to their sterilizability, flexibility, and biocompatibility, they are particularly well-suited for the safe transport of pharmaceutical liquids and hygienically sensitive processes.

Piezoelectric elements convert mechanical energy into electrical signals and electrical energy into mechanical motion.
They are often made of PZT ceramic and are manufactured in various shapes, such as discs, rings, plates, or cylinders.
Typical applications include sensor technology, ultrasonic technology, medical technology, the automotive industry, and industrial measurement technology.

Piezoelemente made of PZT ceramic (relative permittivity 1700-3800) convert mechanical force into electrical voltage and vice versa, via direct and inverse piezoelectricity. Rotima carries standard and customized types from APC International (Cylinders, Stripe Actuators, Stack Actuators, Disc Benders, Ultrasonic Transducers, Buzzers, Nebulizers) and Audiowell (Ultrasonic, Flow, Level, DEF Sensors) for medical, industrial automation and automotive applications.

Planar transformers are compact high-frequency transformers with flat, planar windings that are often integrated directly into printed circuit boards.
They enable a low profile, high power density, and efficient heat dissipation, making them particularly suitable for space-constrained applications.
Typical applications include power electronics, electric vehicles, renewable energy systems, and telecommunications equipment.

Plugs and connectors enable the safe transmission of power, signals, and data between electrical and electronic components.
The product line includes quick-connect connectors and rugged industrial connectors designed for easy installation, reliable contact, and long-lasting use.
They are used in electronics, electrical engineering, industry, transportation, medical technology, and photovoltaics, and are available to meet a variety of power and connection requirements.

Polyimide tubing (PI) is high-performance thermoset tubing, PFAS-free, manufactured using the dip-coat process with a continuous service temperature of up to +220 °C (short-term up to +400 °C), dielectric strength 22 kV/mm, internal diameters from 0.051 mm (AWG 44) and wall thicknesses from 0.0064 mm. Rotima offers Electrical Grade (micro cables, coils, relays) and Medical Grade (＜100 ppm Cu, for catheters and endoscopy) resistant to UV, ionizing radiation and most chemicals.

Polymer electrolytic capacitors are compact capacitors with low ESR, high current-carrying capacity, and a long service life.
They are particularly well-suited for high-frequency and high-current applications, where they ensure a stable power supply with low electrical losses.
Typical applications include switching power supplies, DC/DC converters, inverters, telecommunications, and automotive electronics.

Polyolefin and halogen-free heat-shrink tubing is used for electrical insulation, mechanical protection, cable identification, and color coding.
Depending on the model, they are available with thin, medium, or thick walls, with or without an internal adhesive; halogen-free variants do not contain chlorine, fluorine, iodine, or bromine.
Typical applications include electrical engineering, electronics, industry, transportation technology, public buildings, and safety-critical applications where low smoke and corrosion risks are required.

Potentiometers are adjustable resistors with a mechanical wiper on a resistor element made of carbon, cermet or conductive plastic. The wiper divides the input voltage variably(voltage divider). Rotima carries Bourns® series: Commercial Slide (manual/motorized), Precision Controls (22-51 mm, single/multiturn, up to IP 68), Linear Motion Potentiometers and Trimpot® (10 Ω-2 MΩ, single/multiturn) for audio, instrumentation and industrial controls.

Potting compounds are curing synthetic resins, epoxy (cold or hot curing) or polyurethane, which completely enclose electronic components and thus protect them from moisture, dust, vibration and foreign bodies as well as insulating them electrically and fixing them mechanically. Rotima stocks 3M Scotchcast grades(8, 9, 226, 235, 280, 281) in high to low viscosity versions, Shore hardness 75 Shore A to 70 Shore D, insulation classes B/F for transformers, coils, capacitors and entire assemblies.

Power connectors enable the safe transmission of high electrical currents between devices, equipment, and power supply systems.
Depending on the design , they offer mechanical coding, touch protection, and modular designs to prevent incorrect connections and meet various power requirements.
Typical applications include industrial plants, power supply systems, charging and battery systems, as well as electrical and electronic devices.

Power inductors are used for energy storage, current smoothing, and filtering in electronic circuits.
They are available in various types, including multilayer chip inductors, molded inductors, and wire-wound inductors, to meet different current and space requirements.
Typical applications include power supplies, DC/DC converters, power electronics, and compact industrial and automotive applications.

Power resistors convert electrical energy into heat. In wire, thick film or precision foil technology and limit currents under high thermal load. Rotima offers VPG foil series: Wirewound (BR/BRT 60-500 W, Metal Clad; PWR-SMD 0.5-10 W; UAL up to 250 kΩ / 50 W), Power (FHR up to 2500 W, ±50 ppm; VHP4Z TCR ±0.2 ppm/°C) from Bourns and VPG for motor controls, power supplies and BMS.

Pressure sensors convert mechanical pressure into an electrical signal via a piezoresistive silicon diaphragm(MEMS technology). Rotima offers the BPS series from Bourns: compensated versions(BPS110-BPS170) with 12-13 bit DAC, accuracy ±0.25 %FS, measuring ranges 0.15-500 psi, operation -40 °C to +150 °C. As analog and I²C output. Uncompensated BPS300 types for customer-specific calibration, SMD design.

Primary-side AC-DC converters convert AC line voltage into a stable DC voltage and regulate the output directly via the primary side of the power supply.
They enable energy-efficient AC-DC conversion with a compact design and low power loss, and are particularly well-suited for switching power supplies.
Typical applications include industry, automation, LED lighting, and medical technology, where a reliable and efficient power supply is required.

Our products include custom transformers, chokes, inductors, and EMC components for industrial and electronic applications.
The components are individually designed to meet electrical, mechanical, and thermal requirements and cover power ratings from 0.5 VA to over 50 kVA, as well as currents up to 500 A.
Manufacturing is carried out in accordance with relevant standards such as EN 61558, IEC 60076, EN 60601, and UL 5085 to ensure reliable performance in demanding applications.

Protective tubing is used to provide mechanical and electrical protection for cables, wires, and wiring harnesses against abrasion, stress, and environmental influences.
The product range includes, among other items, braided sleeves and fabric heat-shrink tubing in various sizes, colors, and materials for different application conditions.
They are used primarily in electrical engineering, electronics, and automotive engineering and are available both as standard products and in custom designs.

PTFE-FEP double-wall heat-shrink tubing combines a robust PTFE outer layer with a meltable FEP inner layer to provide a permanent seal for components.
At a shrink temperature of approximately 330 °C, the FEP layer liquefies and forms a moisture-tight seal around cables, connectors, wires, or splices.
They offer high resistance to temperature and chemicals and provide long-term protection for electrical connections against moisture and other environmental influences.

PTFE heat-shrink tubing is high-performance tubing designed for extreme thermal and chemical conditions and can withstand temperatures up to +260 °C during continuous operation.
They are chemically resistant to nearly all acids, alkalis, and solvents, while also offering excellent dielectric properties and high resistance to weathering and UV radiation.
Available options include versions with shrink ratios of 2:1 and 4:1, as well as particularly thin-walled designs for space-critical and medical applications.

2:1 PTFE heat-shrink tubing is made of polytetrafluoroethylene and shrinks to about half its original diameter when exposed to heat.
They offer high resistance to temperature and chemicals, excellent electrical insulation, and protection against corrosion, UV radiation, and weathering.
Typical applications include electrical insulation, high-temperature applications, and industrial cable and wire protection systems.

4:1 PTFE heat-shrink tubing is a highly adaptable heat-shrink tubing solution for cable protection and electrical insulation across a wide range of component diameters.
The 4:1 shrink ratio allows for the secure wrapping of complex geometries; PTFE offers high chemical resistance and durability under harsh environmental conditions.
They are suitable for high-voltage applications as well as demanding industrial applications, among other things, and are available in various sizes and colors.

PTFE Sub-Lite-Wall heat-shrink tubing is an ultra-thin-walled heat-shrink tubing designed for electrical insulation and the protection of sensitive cables, wires, and components.
It is characterized by high temperature resistance, chemical resistance, low friction, and UV resistance, and, depending on the size, has wall thicknesses ranging from only about 0.03 to 0.12 mm.
Typical applications include electronics, medical technology, industrial settings, and high-temperature applications where very thin wall thicknesses and reliable protection are required.

PTFE hoses are fluoroplastic hoses designed for applications involving high temperatures, aggressive chemicals, and strict requirements for media purity.
They are designed for continuous temperatures up to +260 °C, are virtually universally resistant to chemicals, and are available in wall thicknesses ranging from 0.1 to 2.0 mm as well as in various configurations.
Typical applications include electrical engineering, electronics, chemistry, laboratory technology, and process engineering, where high electrical insulation and reliable material resistance are required.

PVDF heat-shrink tubing (Kynar®) reliably protects cables, connections, and sensitive components from abrasion, mechanical stress, and chemical exposure.
With a shrink ratio of 2:1, an operating temperature range of −55 °C to +175 °C, and high electrical breakdown strength, they are suitable for demanding technical applications.
They are used, among other things, in the aerospace, automotive, medical technology, and sensor industries, where compact protection and high material resistance are required.

Quick connectors enable a tool-free, reverse polarity protected power and data connection using hermaphroditic plugs. Each element serves as both plug and socket. Rotima carries Anderson Power Products (APP®, founded in 1877): Powerpole PP15-PP180 (low voltage), Multipole SB 50-SB 350(up to 350 A), SBE/SBX series as well as Compact PowerMod - REACH/RoHS compliant for electromobility, lithium-ion systems, telecommunications and photovoltaics.

Radial electrolytic capacitors consist of an aluminum anode with Al₂O₃ dielectric and a liquid electrolyte. Both connections come out on one side and allow vertical PCB mounting. Rotima carries Hongda series (ISO9001/IATF16949): General Purpose RGR/RRL(6.3-450 V, 0.1-33,000 µF, up to 2,000 h), Long Life RLZ (up to 12,000 h, -40 to +105 °C), High Temperature RLL (up to +130 °C, 5,000-6,000 h), Low Impedance RRC(4,000-10,000 h) and Super Low Temp RGK(-55 to +105 °C) - for switching power supplies, LED drivers and solar inverters.

Radial tantalum capacitors consist of a sintered tantalum anode with Ta₂O₅ dielectric and a MnO₂ or polymer cathode - no liquid electrolyte, therefore no drying out and low leakage currents. Rotima carries the Hongda type CA42(ISO9001/IATF16949): Capacitance 0.68-＞680 µF, dissipation factor DF 4-16 % at 25 °C, leakage current DCL 8I/10I at 85/125 °C, operation -55 to +125 °C for telecommunications, automotive electronics and medical technology.

Resistors are passive components that limit the flow of current according to Ohm's law (U = R - I), divide voltages and attenuate signals. Characterized by resistance value [Ω], tolerance, power rating [W] and temperature coefficient TCR [ppm/°C]. Rotima supplies chip resistors (Hongda, thick film, 01005-2512), wirewound and power resistors (VPG, Bourns, TCR from ±0.2 ppm/°C), current measuring resistors/shunts(Shivalik, on/off board) and trimmers (Bourns® Trimpot®) for measurement technology, automotive and industrial electronics.

Safety transformers ensure safe electrical isolation between the primary and secondary sides and provide safety extra-low voltage for electrical devices and systems.
They are designed in accordance with DIN EN IEC 61558-2-6 and reduce the risk of dangerous contact voltages through appropriate insulation, air and creepage distances, and optimized windings.
Typical applications include equipment manufacturing, automation, medical technology, and industrial electronics—for example, in SELV and PELV circuits.

Screw-terminal electrolytic capacitors are high-performance capacitors designed for industrial and power electronics applications with high capacitance and voltage requirements.
They are particularly well-suited for inverters, UPS systems, and high-current applications and are available in a variety of capacitance, voltage, and temperature ranges.
They are characterized by their high ripple current capability, long service life, and robust design for reliable operation under demanding conditions.

Secondary-side AC-DC converters operate on the secondary side of a transformer and provide a stable, regulated DC voltage for electronic systems.
They combine rectification, filtering, and voltage regulation and achieve high energy efficiency through modern technologies such as synchronous rectification.
Typical applications include switching power supplies, industrial automation, power electronics, telecommunications, and semiconductor technology.

Sensors measure physical or electrical quantities and convert them into electrical signals that can be evaluated by control, measurement, and monitoring systems.
They are used, among other things, to measure light, pressure, humidity, current, distance, position, and rotational speed, and enable precise process monitoring.
Typical applications include industry, automation, energy technology, and medical technology, where robust designs and reliable signal processing are required.

Heat-shrink caps are heat-shrinkable end caps made of modified polyolefin for sealing and protecting exposed cable ends and electrical connections.
Thanks to the internal adhesive and a 3:1 shrink ratio, heating creates a tight seal that protects against moisture, dust, and mechanical stress.
They are suitable for power and telecommunications cables up to 1 kV and are water-repellent as well as resistant to UV radiation, ozone, and oxidation.

Heat-shrinkable tubing is heat-shrinkable polyolefin, fluoropolymer or elastomer tubing that shrinks to a ratio of 2:1 or 3:1 when heat is applied and electrically insulates, mechanically protects and seals cables. Rotima carries: Polyolefin thin-walled/medium-walled/thick-walled (with/without internal adhesive, halogen-free, yellow/green), fluoropolymer RT-375 (crystal clear), PVDF Kynar, fluoroelastomer VITON-E, rigid PVC Kopalon (super-thin, for battery packs), end caps and molded parts can be cut to special dimensions.

Silicone-fabric-reinforced hoses - Pressure hoses are monofilament-braided silicone hoses designed for high-pressure applications in equipment manufacturing, mechanical engineering, hydraulics, the chemical industry, and electrical engineering.
They are designed for a temperature range of −60 °C to +180 °C and, depending on their dimensions, can withstand operating pressures of up to approximately 27 bar.
The hoses combine high flexibility, pressure resistance, and temperature resistance and are suitable, among other things, for compressed air as well as the transport of liquids and gases.

VMQ silicone heat-shrink tubing provides flexible electrical insulation and mechanical protection for cables, sensor leads, and electronic assemblies.
They are halogen-free, thin-walled, and have no internal adhesive; they feature a shrink ratio of 1.5:1 and are designed for temperatures ranging from −50 °C to +200 °C.
Thanks to their low shrinkage temperature (starting at approximately 80 °C), they are particularly suitable for temperature-sensitive components as well as applications with tight bend radii and moving cables.

Silicone round cords and monofilaments are peroxide-cured silicone profiles for sealing, insulation, and technical applications in industry and electrical engineering.
They are available in diameters ranging from 1 to 30 mm and are designed for a temperature range of −60 °C to +200 °C.
The material has a Shore A hardness of 60 ±5 and complies with, among others, FDA §177.2600, BfR XV, and EC 1935/2004.

Small transformers convert alternating voltages through electromagnetic induction. The turns ratio determines the transformation ratio. Rotima manufactures three custom core shapes: EI (PE/PES/WEK laminations, 30-150 mm, compact printed-circuit transformers), UI (PU/PUS/PUV, 30-60 mm, efficient coupling), and M (PM/PMD/PMV/SMD 42-102 mm, low stray field) for power supplies, galvanic isolation, impedance matching, and signal transmission at 50/60 Hz.

SMT electrolytic capacitors are compact capacitors designed for direct surface mounting on printed circuit boards and are particularly well-suited for automated assembly processes.
They offer high capacitance with a small footprint as well as low impedance and are used for voltage stabilization, filtering, and energy buffering.
Typical applications include power supplies, control systems, embedded systems, communications and power electronics, as well as automotive and medical technology.

SMT tantalum capacitors are compact tantalum capacitors designed for direct surface mounting on printed circuit boards and are suitable for demanding electronic applications.
Depending on the model , they offer high capacitance, low ESR values, and high temperature resistance in a compact design.
Typical applications include industrial electronics, automotive technology, and medical technology, where reliable and long-lasting capacitors are required.

Snap-in electrolytic capacitors arealuminum electrolytic capacitors with special terminals designed for safe and quick mounting on printed circuit boards.
They offer high capacitance, high current-carrying capacity, and a long service life in a comparatively compact design.
Typical applications include switching power supplies, frequency converters, and UPS systems, where reliable energy storage and voltage stabilization are required.

Spark killers are RC circuits consisting of a resistor and a capacitor that reduce voltage spikes and sparking caused by switching inductive loads.
They specifically protect relays, contactors, and mechanical switches from contact wear and can also reduce electromagnetic interference.
Typical applications include industrial plants, control systems, control cabinet technology, and automation technology involving motors, solenoids, or transformers.

Specialty hoses are high-performance hoses made from materials such as polyimide (Kapton®) and PEEK for demanding high-tech applications.
They offer high electrical insulation, chemical resistance, and high resistance to temperature and radiation, and some are available with extremely small diameters and wall thicknesses.
Typical areas of application include electronics, microelectronics, medical technology, chemistry, aerospace, and energy technology.

Special-purpose PEEK hoses are made of polyetheretherketone and are designed for applications with high requirements for temperature resistance, dimensional stability, media contact, and electrical insulation.
They offer high mechanical strength, chemical resistance, and pressure resistance, and are available with very small inner diameters starting at 0.076 mm.
Typical applications include electrical engineering, electronics, precision engineering, and demanding fluid systems where standard plastics reach their limits.

Standards and certifications ensure that custom inductors, transformers, and chokes meet defined requirements for safety, insulation, and material quality.
Relevant standards include, among others , UL 94, UL 5085, UL 1446, EN 61558, and EN 60601.
In addition, compliance with the RoHS Directive supports the standard-compliant and internationally applicable design of electrical components.

Storage chokes are inductors with a defined air gap in the ferrite or iron powder core. The air gap reduces the effective permeability, prevents magnetic saturation at high DC current and linearizes the energy storage. Characteristic values are inductance L [µH], saturation current I_sat, DC resistance R_DC and AL value [nH/N²]. Rotima manufactures storage chokes according to customer specifications in cooperation with Kaschke Components for DC/DC converters, switching power supplies and PFC circuits.

Litz wires are bundles of many individually enameled copper wires that drastically reduce the skin and proximity effect at high frequencies. Rotima supplies two types of PACK Litz Wire (DIN EN 9001, DIN/VDE/IEC/UL): RUPALIT® high-frequency l itz wires - single wire Ø below the skin depth of the operating frequency(at 1 MHz: δ ≈ 0.066 mm), e.g. 500 × 0.05 mm - and fine wires from Ø 0.015 mm for switching power supplies, resonant converters and inductive charging coils.

Surge protection devices discharge transient overvoltages caused by lightning strikes, switching operations or induction before they damage sensitive electronics. Varistors (MOV) limit the voltage bidirectionally , gas discharge tubes (GDT) absorb surge currents above 25 kA, TVS diodes react in nanoseconds, TISP®thyristors(15-520 V) protect telecommunication lines. Rotima offers Okaya and Bourns solutions for industry, telecommunications and IT infrastructure.

Synchronous rectifiers are highly efficient rectifiers that use MOSFETs instead of conventional diodes to significantly reduce conduction losses during rectification.
They are suitable for high-frequency switching power supplies and efficient energy conversion and, depending on the version, support operating modes such as CCM, DCM, and QR, as well as PSR and SSR topologies.
Typical applications include industrial electronics, the automotive sector, the Internet of Things (IoT), and high-performance power supplies with stringent requirements for efficiency and a compact design.

Synchronous rectifier controllers drive MOSFETs in such a way that the rectification process occurs with the lowest possible energy losses.
Compared to traditional diodes , they enable higher efficiency, lower heat generation, and more compact power supplies.
Typical applications include switching power supplies, battery chargers, DC/DC converters, industrial electronics, and high-current applications.

Tantalum capacitors consist of a sintered tantalum anode with Ta₂O₅ dielectric and a conductive cathode. No liquid electrolyte, therefore high capacitance density, low leakage currents and temperature stability -55 to +125 °C. Rotima carries Hongda series(ISO9001/IATF16949): Radial CA42 (THT, 0.68-＞680 µF), SMT CA45/CA55 (0.68-2,200 µF, 2.5-100 V), Automotive QCA45 and Hybrid HTHC (ESR 0.03-0.6 Ω, up to 230,000 µF) for telecommunications, automotive and medical technology.

Temperature-dependent resistors change their electrical resistance in response to temperature, thereby enabling precise temperature measurement and compensation.
Known asNTC resistors or PTC resistors, they are used, among other things, on printed circuit boards and in industrial electronics applications for monitoring and regulating temperatures.
ROTIMA offers thermosensitive resistors from VPG Foil Resistors for applications with high requirements for accuracy, stability, and reliability.

Temperature switches open or close an electrical circuit when a defined switching temperature is reached. In the case of bimetal types, this is due to the different coefficients of thermal expansion of two connected metal strips, which deform when the temperature changes and actuate the contact. Rotima offers Uchiya temperature switches for overheating protection of electronic components for small motors, transformers, switching power supplies, electronic circuit boards and industrial machines, as standard and customized versions.

Thermistor heaters are self-regulating heating elements made of doped BaTiO₃ ceramic with a positive temperature coefficient (PTC). As the temperature rises, their resistance increases sharply, which limits the current and stabilizes a defined equilibrium temperature without an external thermostat circuit. Rotima carries Ceramic PTC Heaters from Bourns® (AEC-Q200 compliant) - for automotive electronics, HMI, medical and industrial controls that require a compact, self-regulating heating solution.

Chokes are inductive components - a wire coil around a magnetic core - that limit current flow, attenuate voltage peaks and filter HF interference. Core parameters are inductance L [H], saturation current I_sat, rated current I_rated, DC resistance R_DC and quality factor Q. Rotima manufactures toroidal chokes ( EMC filtering) and storage chokes ( DC-DC converters, switching power supplies) according to customer specifications in cooperation with Kaschke Components.

Toroidal chokes on toroidal ferrite or iron powder core. The closed magnetic circuit minimizes stray fields and magnetic radiation. Rotima offers three series from Kaschke Components: current-compensated toroidal chokes (common mode filtering, EN 138100 / DIN EN60938-2), PFC chokes and PFC circuits.

Toroidal transformers are compact transformers with a ring-shaped magnetic core, which enables short magnetic paths and low losses.
They are characterized by high efficiency, a low profile, and a comparatively low stray field, and can be customized for specific projects in terms of voltage, power, and connection type.
Typical applications include industry, medical technology, measurement and testing technology, as well as audio and power supply systems.

Converters convert electrical quantities. Voltage, current or signal form from one level or type to another. DC-DC converters(step-up/step-down, PWM-controlled) achieve efficiencies above 95 %, AC-DC converters rectify and regulate mains voltage. Rotima offers DC-DC converters, voltage converters and current converters from Bourns® as well as GaN-based AC-DC converter ICs from Dongke Semiconductor for industrial control, automotive and medical applications.

Transducers are devices that convert physical quantities or forms of energy into electrical signals or other forms of energy.
ROTIMA offers, among other things , piezoelectric air and power transducers, ultrasonic transducers, nebulizers, and modules for flow measurement.
Typical applications include industrial automation, sensor technology, ultrasonic technology, medical technology, cleaning, and precision measurement technology.

Transformers convert alternating voltages by electromagnetic induction. The number of turns between the primary and secondary windings determines the ratio. Transformers transmit signals electrically isolated. Rotima carries Bourns® types: Power transformers (power electronics, voltage matching), planar transformers(compact SMD design), AEC-Q200 compliant transformers (automotive, BMS) and chip LAN transformers (network technology) for industrial, automotive and communication applications.

Transformers transmit AC voltage signals electrically isolated by electromagnetic induction without a conductive connection between the primary and secondary circuits, eliminating potential differences and suppressing signal interference. Rotima carries Bourns® types: AEC-Q200 compliant transformers for BMS and automotive electronics, chip LAN transformers for interference-free network connections in routers and switches as well as planar transformers in compact SMD design for automotive, telecommunication and industrial applications.

Transformers transfer electrical energy between circuits and are used to step up or step down voltages, adjust power levels, and provide electrical isolation.
Depending on the application , the primary and secondary voltages, rated power, frequency, design, and terminal configuration are precisely tailored to the technical requirements.
They are used, among other things, in industrial equipment, electronic assemblies, and power supply systems—for example, as small, economy, isolation, or safety transformers.

Transistors are active semiconductor components for switching and amplifying electrical currents. BJTs are controlled by base current, FETs by gate voltage and IGBTs by a combination of both principles. Rotima only supplies the IGBT as a transistor type: BID series from Bourns (Trench-Gate Field-Stop), VCE 650 V, IC 75 A @ 100 °C, operating temperature -55 °C to +175 °C - in TO-247/TO-252 for SMPS, UPS and PFC.

Trimmers are adjustable miniature resistors with cermet (glass-to-metal thick film) or wirewound resistive element and mechanical wiper that are used with a screwdriver for circuit adjustment. Rotima offers Bourns® Trimpot®: single-turn (direct drive, sealed and open-frame) and multiturn(up to 25 turns, higher resolution), 10 Ω-2 MΩ, THT and SMD - for precision calibration, circuit drift correction and fine tuning in measurement, medical and industrial electronics.

UI transformers are transformers with a UI core consisting of U- and I-shaped core sections, which allows for various design configurations.
They are available in open or encapsulated designs with various mounting options, dimensions, and power ratings.
They are particularly suitable for applications where the height, mounting, and connection orientation must be precisely defined in the design.

Ultrasonic level sensors measure the level of liquids or bulk solids without contact by ultrasonic transit time without moving parts, therefore higher accuracy and reliability than reed float sensors. Audiowell UM0059 measures DEF/AdBlue in SCR systems: Measuring range 150 mm, resolution 4 mm, accuracy ±5 mm, analog output 0-5 V, operation -40 to +85 °C, DC 12 V / max. 25 mA. Rotima distributes Audiowell Level Sensors for automotive, industrial and tank applications.

Ultrasonic rangefinders measure distances contactlessly via the transit time of ultrasonic pulses. The sensor transmits a pulse, receives the echo and outputs the distance as a pulse width or UART signal. Audiowell UM0034: 60 kHz, measuring range 20-1000 mm, accuracy 1 cm, DC 5 V / ≤9 mA, UART (TTL), 0-65 °C, IP-protected; UM0090 up to 3 m. Rotima distributes Audiowell rangefinders for AGVs, robotics, parking aids and autonomous vehicle systems.

Ultrasonic sensors detect distances, fill levels and flow rates without contact: A piezoelectric transducer emits high-frequency sound pulses; the transit time of the reflected echo provides the measured variable, regardless of light conditions and surface properties. Rotima offers Audiowell sensors with application-specific frequencies, measuring ranges and housing designs for industrial tanks, AdBlue systems, flow measurement in gases and liquids as well as high-temperature and underwater variants.

Varistors are non-linear, bidirectional overvoltage protection components made of zinc oxide ceramic. Below the response voltage, the resistance drops abruptly and transients are dissipated. Rotima offers two types of Bourns®: Metal Oxide Varistors(MOV, various form factors, high impulse energy) for industrial, IT and household appliances and Multilayer Varistors(MLV, 0201-2220 package, Imax up to 2 kA) for miniature applications and low voltage electronics.

Voltage divider networks are precisely tuned resistor networks designed to accurately divide electrical voltages within electronic circuits.
They are characterized by very tight tolerances, low temperature coefficients, and high long-term stability, thereby providing reproducible voltage divider ratios.
They are primarily used in high-precision measurement, control, and RF applications where minimal drift, low noise, and stable electrical characteristics are critical.

Voltage converters transform an input voltage into an output voltage suitable for the specific application and thus play a central role in power supplies.
They are available in standard or custom designs and can be adapted to specific voltage ranges, protection functions, and connection requirements.
Typical applications include industrial automation, medical technology, aerospace, and industrial electronic systems.

Wirewound resistors consist of a resistor alloy wound around a ceramic or axial core. Rotima offers series of VPG Foil Resistors and Bourns: Wirewound types with TCR from ±0.2 ppm/°C, tolerances from ±0.005 %, rated power 0.1-2500 W - as fusible, through-hole and ceramic packages. Used in measurement technology, medical devices, telecommunications and high-performance electronics.

Winding technology encompasses processes and solutions for the precise manufacture of wound electrical components such as coils, chokes, and transformers.
It is suitable for both fine wire windings and larger coils and can be implemented as a standard solution or customized to meet specific customer requirements.
Typical applications are found in electrical engineering and electronics, where high precision, reliability, and reproducible winding processes are required.

X capacitors are safety-certified interference suppression capacitors that are connected between the phase and neutral conductor. They short-circuit high-frequency push-pull interference from 150 kHz and allow useful signals at 50/60 Hz to pass through unhindered. Typical capacitance values are between 100 nF and 1 µF; there must be no risk of fire in the event of a dielectric breakdown(class X1/X2 according to IEC 60384-14). Rotima supplies interference suppression capacitors from Okaya Electric Industries for switching power supplies, frequency converters and industrial control systems.

The X7R capacitor is a Class 2 MLCC dielectric class with a capacitance change of ±15 % over the temperature range -55 to +125 °C, a compromise between stability and high capacitance density. Compared to NP0/C0G, X7R offers higher capacitance values in a compact design, but shows voltage dependence (DC bias effect). Rotima offers Hongda MLCCs HLC series X7R (100 pF-47 µF, 4-100 V, sizes 0402-2225, ISO9001/IATF16949) for decoupling, EMC filtering and power electronics.

Y capacitors are safety-certified interference suppression capacitors that are connected between the mains conductor and protective earth. They dissipate high-frequency common-mode interference without generating a dangerous touch current in the event of a dielectric breakdown. Class Y1 (up to 8 kV impulse voltage) and Y2 (up to 5 kV) are approved in accordance with IEC 60384-14. Rotima supplies interference suppression and film capacitors from AIC Europe and Okaya for EMC-compliant power supply units and industrial control systems.

A Zener diode uses controlled Zener breakdown in the reverse direction. When the Zener voltage UZ is reached, the voltage remains almost constant, independent of the current and thus serves as a voltage reference or overvoltage protection. Rotima offers Zener types from the Bourns® diode range(AEC-Q100, JEDEC-compliant, RoHS) in SMD designs SOT23 to SMC for voltage regulation, reference voltages and protection circuits in automotive, medical and industrial electronics.

A zinc oxide varistor (MOV - Metal Oxide Varistor) is a non-linear, bidirectional protective element made of sintered ZnO ceramic with doping additives. Below the response voltage, it behaves with high impedance; if this is exceeded, the resistance collapses abruptly and the transient energy is dissipated. In contrast to the diode, the MOV has the same effect in both current directions. Rotima offers Metal Oxide Varistors from Bourns® in various form factors for industrial, telecommunications and household appliances.