Inductors, Coils and Transformers

Harness the power of magnetic fields with our selection of inductors, coils, and transformers, essential components for energy storage, signal filtering, and voltage transformation in electronic circuits. Inductors store energy in the form of magnetic fields when current flows through them, resisting changes in current and providing inductive reactance in AC circuits. Coils, often used interchangeably with inductors, are designed to produce magnetic fields when current passes through them, serving as components in electronic filters, oscillators, and RF circuits. Transformers consist of two or more coils coupled by a magnetic core, enabling voltage transformation, impedance matching, and galvanic isolation in power supplies, amplifiers, and communication systems. Whether you’re designing power converters, audio equipment, or RF transmitters, our inductors, coils, and transformers provide reliable performance and efficient energy transfer in your electronic designs.

Turning old inventory into new business.


Wireless Charging Coils

Toroidal Inductors

SMD Common Mode Chokes

Other Inductors

Coupled Inductors

Power Factor Correction Chokes

RF Inductors

Power Inductors

Radial Leaded Common Mode Chokes

Types of inductors, coils, and transformers

  1. Wire-Wound Inductors: Inductors made by winding a conductive wire around a core, typically made of ferrite, iron powder, or air. They are widely used in electronic circuits for their high inductance values and low cost.

  2. Toroidal Inductors: Inductors with a toroidal (doughnut-shaped) core, providing high inductance values with low electromagnetic radiation and high efficiency. They are commonly used in power supplies, audio equipment, and RF circuits.

  3. Ferrite Beads: Small ferrite cores used to suppress high-frequency noise in electronic circuits by acting as a low-pass filter. They are commonly used in power supply lines, signal lines, and data cables.

  4. Chip Inductors: Surface-mount inductors integrated into a chip package, offering compact size and high performance. They are widely used in portable electronic devices, RF circuits, and telecommunications equipment.

  5. Power Inductors: Inductors designed to handle high currents and power levels, commonly used in power supplies, voltage regulators, and DC-DC converters.

  6. RF Inductors: Inductors optimized for radio frequency (RF) circuits, providing high Q factor, low parasitic capacitance, and low loss characteristics. They are commonly used in RF filters, matching networks, and antenna circuits.

  7. Coupled Inductors (Transformers): Inductors with multiple windings coupled together magnetically, used to transfer energy between circuits or to provide impedance matching. They are commonly used in power converters, transformers, and RF circuits.

  8. Common Mode Chokes: Inductors with two or more windings wound on a common core, used to suppress common mode noise in signal and power lines. They are commonly used in EMI filters, power supplies, and communication interfaces.

  9. Variable Inductors: Inductors with adjustable inductance values, often achieved by mechanically varying the number of turns or the magnetic core material. They are used in tunable RF circuits, oscillators, and impedance matching networks.

  10. Balun Transformers: Transformers used to convert between balanced and unbalanced signals in RF and microwave circuits. They are commonly used in antennas, mixers, and modulators.

  11. Audio Transformers: Transformers used in audio circuits for impedance matching, signal isolation, and voltage level conversion. They are commonly used in audio amplifiers, microphone preamplifiers, and audio signal processing equipment.

  12. Pulse Transformers: Transformers optimized for transmitting pulse signals with minimal distortion and delay. They are commonly used in digital communication systems, pulse generators, and high-speed data transmission.

  13. Isolation Transformers: Transformers used to isolate two circuits electrically while allowing signal or power transfer between them. They are commonly used in power supplies, instrumentation, and safety isolation circuits.

  14. High Frequency Transformers: Transformers designed to operate at high frequencies, typically in the RF and microwave range. They are commonly used in RF amplifiers, RF modulators, and wireless communication systems.

  15. Flyback Transformers: Transformers used in flyback converters to store and transfer energy between primary and secondary windings. They are commonly used in switch mode power supplies, CRT displays, and television sets.

  16. Autotransformers: Transformers with a single winding tapped at different points, used for voltage regulation, impedance matching, and phase shifting. They are commonly used in voltage regulators, variable transformers, and power distribution systems.

  17. Instrument Transformers: Transformers used in measurement and instrumentation applications to scale down high voltages or currents to levels suitable for measurement. They are commonly used in wattmeters, ammeters, and voltmeters.

  18. RF Transformers: Transformers designed for operation in RF circuits, typically with broadband frequency response, low insertion loss, and high power handling capabilities. They are commonly used in RF amplifiers, filters, and impedance matching networks.

  19. Planar Transformers: Transformers with windings arranged in a planar configuration, typically on a printed circuit board (PCB), offering compact size, low profile, and high power density. They are commonly used in power converters, motor drives, and high-frequency applications.

  20. Current Transformers (CTs): Transformers used to measure alternating current (AC) in power systems, typically with a primary winding and a secondary winding connected to a current meter or monitoring device. They are commonly used in power distribution systems, energy meters, and protective relays.


  1. Murata Manufacturing Co., Ltd.
  2. TDK Corporation
  3. Vishay Intertechnology, Inc.
  4. Coilcraft, Inc.
  5. Würth Elektronik
  6. Taiyo Yuden Co., Ltd.
  7. Sumida Corporation
  8. Bourns, Inc.
  9. Panasonic Corporation
  10. TOKO, Inc.
  11. Laird Performance Materials
  12. Pulse Electronics Corporation
  13. API Technologies Corp.
  14. EPCOS AG (a TDK Group Company)
  15. Delta Electronics, Inc.
  16. Panasonic Electronic Devices Co., Ltd.
  17. NIC Components Corporation
  18. Gowanda Electronics Corporation
  19. Schaffner Holding AG
  20. Kemet Corporation

Inductors, Coils, and Transformers FAQs

We offer a wide range of inductors, coils, and transformers including toroidal inductors, power inductors, RF inductors, chokes, signal transformers, and power transformers.

Consider factors like inductance value, current rating, resistance, and operating frequency. Our product filters and datasheets can help narrow down the best options for your needs.

Yes, we offer custom solutions to meet specific requirements. Contact our sales team to discuss your custom design needs.

Our inductors and transformers are used in power supplies, signal processing, RF applications, filtering, and energy storage in various electronic devices.

Yes, our technical support team is available to assist with product selection, design recommendations, and troubleshooting.

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