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This section provides an overview for choke coils as well as their applications and principles. Also, please take a look at the list of 23 choke coil manufacturers and their company rankings. Here are the top-ranked choke coil companies as of January, 2025: 1.Coilcraft Inc., 2.Ueno Co., Ltd, 3.Vishay Intertechnology, Inc.,.
Table of Contents
A choke coil is an element used in electrical circuits and is a type of inductor optimized for use as a choke.
The meaning of choke in this case refers to the ability to keep AC currents above a certain frequency relatively high and to facilitate the passage of currents below that frequency, and is implemented in an electrical circuit.
The typical coil construction consists of a laminated plate of silicon copper or other steel plate as the core (iron core), around which conductors are wound in a spiral shape.
There are three types of choke coils: smoothing choke coils, active filter choke coils, noise filter choke coils, and power line choke coils. Each is used for different purposes.
As mentioned above, there are four major types of choke coils depending on the application.
Choke coils are used to reduce the distortion of the current when AC current is converted to DC by a smoothing circuit or AC/DC converter, and to smooth the current.
Used as a high-frequency countermeasure in active filters used in analog signal input circuits such as measuring instruments.
Choke coils are mounted in power supply circuits that are prone to noise inflow and used as noise countermeasures.
Choke coils are used to match the load of RF power amplifiers and to reduce impedance resistance and losses in power supply lines.
A choke coil consists of a core made of a laminated plate of silicon copper or other steel plate, around which conductors are wound in a spiral shape.
The choke coil is characterized by a higher inductance value than the coils used in general.
General coils and choke coils differ in the following characteristics:
The reason why choke coils have the above characteristics is that they have a high inductance value and when an AC current of high frequency flows, an induced electromotive force is generated, which is opposite to the direction of the current flow, making it difficult for the current to flow.
When used as an active filter or for noise suppression, external noise that attempts to flow into a measurement device from its input terminal or power supply terminal of a power circuit has a high frequency. Choke Coils are often used in such applications because they can block high-frequency noise.
Choke Coils are often made by winding a conductor around a doughnut-shaped magnetic core, unless they are ultra-compact chip components, such as those used in smartphones. This is called a toroidal coil and can confine the magnetic flux in a closed loop (right-hand thread law). The advantage of toroidal coils is that they can achieve a larger inductance in a smaller size by utilizing this confined magnetic flux.
Important factors for inductor characteristics include Q-value and maximum allowable current. Based on the recent demand for compact, high-density packaging, manufacturers are competing to improve these inductor characteristics while reducing the size of the inductors.
Various materials are used for the magnetic core of a choke coil, including laminated steel plates. One of the most commonly used magnetic core materials is ferrite material, which can be broadly classified into nickel-based and manganese based materials.
Nickel-based ferrite materials have very high insulation properties and are often used at high frequencies above 100 MHz.
Manganese-based ferrite materials are inexpensive and have high magnetic permeability and saturation flux density, and are often used in common mode chokes for low-frequency power lines.
*Including some distributors, etc.
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Transko Electronics Inc., established in 1982 in New Taipei City, Taiwan, is a manufacturer and supplier of quality electronic components and transformers. The company's main products include transformers, inductors, coils, and chokes used in a wide range of applications, such as power supplies, telecommunications, industrial equipment, and consumer electronics. Transko's components play a crucial role in ensuring good power management and signal integrity in various electronic devices. With a motive for excellence and continuous innovation, Transko aims to provide good solutions to its customers and meet the ever-evolving demands of the electronics field.
Vishay Intertechnology, Inc. (Vishay) was incorporated in 1962 and is headquartered in Malvern, Pennsylvania. The company serves the industrial, automotive, telecommunications, consumer products, and medical end markets and sells its products under numerous brand names inlcuding Siliconix, Draloric, Beyschlag, UltraSource, and Applied Thin-Film Products. The company manufactures and sells discrete semiconductors and passive electronic components in globally while operating in six market segments: MOSFETs, diodes, optoelectronic components, resistors, inductors, and capacitors.
KEMET has a portfolio of over 1,600 patents serving the automotive, aerospace, industrial, telecommunications, computing, consumer, and medical devices. KEMETs devices provide filtering, sensing, energy storage, power conversion, and haptic actuator technology. Among these devices are capacitors, electromagnetic compatibility (EMC) components, resistors, circuit protection devices, inductors, sensors, Piezoelectric devices, release, transformers, and engineering kits.
Tried Magnetics was founded in the 1940s and is based in Perris, California. The ISO 9001:2015-certified company serves industrial equipment, renewable energy, medical equipment, and other industries as a manufacturer of components using standard and custom magnetic components including transformers, power supplies, and inductors. The company’s custom magnetics division encompasses power and audio transformers, chokes, and power supplies used across industries. The company’s engineering development kits and design sample kits include a sampling of power ranges, sizes, and packaging styles within specific product lines to assist customers in choosing final designs for prototyping.
Coilcraft was founded in 1945 and is headquartered in Cary, Illinois. The company is a designer, manufacturer, and distributor of high-performance magnetic components for industries including automotive and computing. The company’s standard products include power devices such as inductors, RF devices, transformers, and EMI components. The company’s automotive division offers transformers, inductors, chokes, and filters operation down to -40 degrees. The company also offers design tools to help customers understand the correct product for their needs and optimum system operational parameters.
King Core, established in the year 1986, and based in Taoyuan City, Taiwan is a manufacturer and supplier of power inductors for EMC/EMI solutions. The product portfolio of the company includes a diverse range of chip beads, chip inductors, ferrite cores, power choke, and common mode choke. The products are used in various industries which include automotive, electronics, network communications, IT products, new energies, and industrial equipment. The company offers ISO-certified products with other certifications.
Chilisin Electronics Corp, established in 1972 and headquartered in Taoyuan, Taiwan is a supplier and a manufacturer of inductors, transformers, and also filters. They provide a complete solution for power, RF, and EMI applications. They have a wide range of products such as EMI-bead, RF-signal inductors, RF-LTCC components, RF-antennas, and wireless power transfer. Their products are used in various industries such as communications, consumer electronics, industrial, medicine, and also in military.
AiT Semiconductor, established in 1996 at Taiwan, is a manufacturer of semiconductors, specializing in the design and production of analog and mixed-signal ICs. The company offers a comprehensive portfolio of IC solutions for various applications, including power management, LED lighting, audio, and wireless network/communication. They manufacture power switches, inductors, regulator LDO, EEPROM memory and resonators along with other electrical solutions. These power components are used in multiple industries such as consumer, medical, industrial, communication and IoT sectors. Their products are equipped with improved performance, low power consumption, and robust sustainability.
PREMO Group is a magnetics manufacturer founded in 1962 and based in Malaga, Spain. The company develops, manufactures, and sells electronic components. The company operates 3 manufacturing plants in Wuhu City (China), Tanger (Morocco), and Quang Nam (Vietnam). Also, PREMO operates research and development centers in France, Germany, Korea, Spain, USA, and China. The main focus of the PREMO Group are products used in IoT, M2M, VR, Connected and Electric Vehicles. Their product list comprises of RFID antennas, Motion Tracking Sensors, and power transformers. PREMO also manufactures inductors & chokes, current sensors, EMC filters, and PLC components.
CoilMaster, established in 1996 is a manufacturer of magnetic components and is located in South Korea. Their product range includes power inductors for power circuits, double core shield power inductors, high current shield power inductors, air core inductors for RF circuits, ferrite chip inductors for general circuits, ceramic chip inductors for high-frequency circuits, and choke coils for PFC. These products are utilized in various applications such as smartphones, tablet PCs, TVs, and automotive. CoilMaster is ISO/TS 16949:2009 certified.
Viking Tech Corporation, established in 1997, is a Taiwanese manufacturer and supplier of electronic components, headquartered in Hukou, Hsinchu. The company’s product lineup comprises resistors, inductors, capacitors, and supercapacitors. These products, particularly the resistors, find applications in various industries. In the medical sector, these resistors are integrated into hospital equipment like X-ray machines, ultrasonography devices, portable defibrillators, and more. Similarly, in the automotive industry, resistors are integrated into electric vehicle (EV) engine control and body control systems, car navigation systems, and other applications. Additionally, the communication industry uses resistors for smartphones and similar devices.
Shenzhen Sunlord Electronics Co., Ltd., established in 2000 with headquarters in Shenzhen, China, is a manufacturer of electronic components. The company's product line includes EMC components, RF components, coils, inductors, and multilayer varistors. These components make up magnetic devices, microwave devices, and sensitive devices, which are widely used in communication devices, consumer electronics, automotive electronics, new energy, and networking equipment. The company serves industries including agriculture, automotive, database infrastructure, mobile communications, and solar power.
The SCHURTER Company was founded in 1933 and operates out of Lucerne, Switzerland. SCHURTER is an innovator and producer of electronic components for many markets including industrial equipment, medical equipment, automotive, avionics and space, data and communication, and energy. SCHURTER products and solutions include: circuit protection, connectors, switches, EMC, custom components, HMI solutions, PCAP touchscreens, resistive touchscreens, capacitive switches, membrane switches, and a series of smart products including Smart Connector DS11 PEM, Smart Connector DT31 external, and Smart Ecosystem.
Token Electronics Industry Co., Ltd., established in Taiwan in 1983, is a manufacturer of electronic components and automatic production systems for commercial and industrial clients worldwide. The company produces a wide range of resistors, inductors, light sensors, microwave components, and RF components. Token Electronics Industry Co., Ltd. offers its clients a complete custom design, testing, and manufacturing service. The company's main export markets include Africa, Asia, Oceania, LATAM, and North America.
Pulse Electronics, founded in 1947 and currently a subsidiary of Yageo Corporation in Taiwan, is a passive electronic manufacturer headquartered in San Diego, California. The company specializes in producing passive electronic components, including antennas and connectors, inductors, current sensing products, power supplies, and power and networking magnetics. With offices and manufacturing facilities in 10 countries worldwide, Pulse serves a wide range of industries. For example, in the transportation sector, the company offers wired and wireless solutions for advanced driver assistance systems (ADAS). Other industries served by Pulse include communication, computing, consumer goods, public safety, and the Internet of Things (IoT).
Würth Elektronik Group, established in 1969 in Germany, is a manufacturer and supplier of quality electronic and electromechanical components. Their extensive product catalog includes passive components, connectors, inductors, sensors, and more, catering to various industries like automotive, telecommunications, and industrial automation. Würth Elektronik's components are integral to building ideal electronic circuits, enabling seamless data transfer and power management. Courtesy of its creativity and sustainability, it aims to provide cutting-edge solutions and good customer service, meeting the diverse needs of its global clientele.
Mitronic Ltd., founded in 2009, is a Taiwanese manufacturer based in New Taipei City, specializing in transformers and inductors. Being certified with ISO 9001:2015, Mitronic provides a range of transformers, including current transformers (CT) and local area network (LAN) transformers. The company also offers different types of inductors such as surface mounted devices (SMD) and surface mount technology (SMT) inductors, as well as leaded and toroidal inductors. Additionally, Mitronic manufactures common mode chokes (CMC) that function as inductors. Mitronic has a sales office in Temecula, California, catering to various industries including electronic devices, instrumentation, medical equipment, and telecommunication sectors.
CEC International Holdings Limited (CECIH) was founded in 1979 and is a manufacturer of a wide range of electronic components. Their product portfolio includes various types of coils, inductors, transformers, line filters, electrolytic capacitors, as well as ferrite and electroceramic materials, plastic, and metal parts. These products have found extensive applications across industry segments, including power supply devices, telecommunication equipment, data networking, digital audio-visual products, and handheld multimedia equipment. They have established offices in major cities in the Asia-Pacific region, such as in Taipei, Shanghai, Singapore, Tokyo, and Bangalore.
Walsin Technology Corporation (also known as WTC and Passive Component), founded in 1970 and incorporated as Walsin Technology Corporation in 1992 with facilities in Taiwan and China, is a manufacturer of passive components. The company's products include MLCC, Chip-R, RF, DISC, varistors (VZ, VH, and SR series), and inductor parts used in the mobile communications, networking, automotive, green energy, and IoT industries, among others. Walsin Technology Corp.’s products are REACH-certified, and the company holds ISO 9001, IATF 16949, IECQ HSPM certifications, and an Authorized Economic Operator Certification.
Ueno Co., Ltd., established in 1982 with headquarters in Tsuruoka City, Japan, is a manufacturer specializing in noise suppression electronic components. The company's product line includes noise filter coils, smoothing and boosting chokes, coils, and Ferrite cores. The components are used in electronic and electric devices for radiation noise suppression, modulating power supply, absorbing power current noise, and keeping interference in as well as out for such products as USB charging cables, audio/visual signaling equipment, conveyors, and elevators. The company serves industries including automotive, consumer products, energy supply, medical, and agriculture.
Zettler Group, founded in 1877 and based in Munich, Germany, is a manufacturer, seller, and distributor of electronic components. The company offers display products including TFT Modules, COG modules as well as relays like appliance relays and power relays. It also provides power products such ferrite transformers, laminated transformers, power modules, and more. The company’s products are designed to offer applications in home appliances, industrial controls, HVAC/R, lighting, energy management, and more, while operating in compliance with ISO 9001, ISO 14001, and IATF 16949 standards.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Coilcraft Inc. |
30.8%
|
| 2 | Ueno Co., Ltd |
15.4%
|
| 3 | Vishay Intertechnology, Inc., |
7.7%
|
| 4 | Triad Magnetics |
7.7%
|
| 5 | KEMET |
7.7%
|
| 6 | Chilisin |
3.8%
|
| 7 | CEC-COIL |
3.8%
|
| 8 | AiT Semiconductor Inc. |
3.8%
|
| 9 | Transko Electronics |
3.8%
|
| 10 | Shenzhen Sunlord Electronics Co.,Ltd. |
3.8%
|
Derivation Method
The ranking is calculated based on the click share within the choke coil page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 29.4% |
|
Taiwan
|
5 | 29.4% |
|
Spain
|
1 | 5.9% |
|
Republic of Korea
|
1 | 5.9% |
|
China
|
1 | 5.9% |
|
Switzerland
|
1 | 5.9% |
|
Australia
|
1 | 5.9% |
|
Germany
|
1 | 5.9% |
Japan
|
1 | 5.9% |
130 products found - Page 2
130 products - Page 2
Sanshin Electric Co., Ltd.
120+ people viewing
Last viewed: 9 hours ago
■Features ・Achieves high common mode impedance and high normal mode impedance by adopting a special magnetic circuit (ideal for DC line noise coun...
Sanshin Electric Co., Ltd.
110+ people viewing
■Applications ・Normal mode filter for switching power supplies ・Removal of normal mode noise such as active filter ・Normal mode filter for inver...
Sanshin Electric Co., Ltd.
100+ people viewing
Last viewed: 5 hours ago
■Applications ・Output smoothing choke coil of switching power supply ・Active filter boost choke coil ■Features ・Low loss and downsizing possibl...
SHT Co., Ltd.
50+ people viewing
Last viewed: 6 hours ago
■Three-phase common mode choke coil that breaks away from hand-wound wire ・Mechanical winding of single wire to handle large currents that cannot ...
10+ people viewing
Last viewed: 1 day ago
Coil for medium to high currents with excellent mass productivity due to mechanical winding, use of new material with excellent DC superposition ■...
SUMIDA
20+ people viewing
Last viewed: 20 hours ago
Sumida's AC power line EMC choke is an electronic component designed to act as a filter, allowing low-frequency AC power to pass through, but remov...
20+ people viewing
Last viewed: 9 hours ago
Surface-mounted coil that supports large current using flat wire ■Features ・Thin profile, compatible with large currents: Adoption of flat wires ...
SUMIDA
20+ people viewing
Last viewed: 20 hours ago
Sumida's DC power line EMC choke is an electronic component designed to act as a filter, allowing DC power to pass through but removing unnecessary...
20+ people viewing
Last viewed: 17 hours ago
Developed a highly insulating metal dust core, a bobbin-less surface mount coil that is smaller, and has excellent temperature characteristics. ■F...
SUMIDA
30+ people viewing
Last viewed: 20 hours ago
Sumida's normal mode chokes are designed to block noise currents flowing from conductor to conductor.
Würth Elektronik
20+ people viewing
Last viewed: 7 hours ago
Standard Response
■Features ・High efficiency ・Good EMC operation ・Height is only 13.1 mm ・Small footprint ・Compatible with main power voltage ・Insulation volta...
Würth Elektronik
30+ people viewing
Last viewed: 6 hours ago
Standard Response
■Features ・RJ45 connector with built-in transformer/common mode choke - Power over Ethernet up to 50 watts, speeds up to 10 Gbit/s ・Available for...
Würth Elektronik
20+ people viewing
Last viewed: 1 day ago
Standard Response
■Features ・High current capacity ・Very reliable mechanical design ・Very high magnetic saturation ・Operating temperature is up to +150℃ ・Automo...
Würth Elektronik
20+ people viewing
Standard Response
■Features ・High current capacity ・Very high saturation performance ・High insertion loss in FM band ・Broadband suppression ・Robust mechanical d...
Würth Elektronik
20+ people viewing
Last viewed: 10 hours ago
Standard Response
■Features ・Current compensation data line filter ・High common mode noise suppression at high frequencies ・Low RDC design ・AEC-Q200 ・Automobile...
20+ people viewing
Last viewed: 9 hours ago
HK Coil" is a product developed as a smoothing choke coil for switching power supplies whose frequencies are becoming higher year by year, and is b...
10+ people viewing
Last viewed: 21 hours ago
Ideal as a choke coil for PFC ■Features - Excellent DC superimposition characteristics (compared to our HK material). This allows the core to be s...
20+ people viewing
Last viewed: 15 hours ago
By using a multi-pin type bobbin, high inductance and high frequency support are achieved, and multi-circuiting is also possible. ■Features - Easy...
10+ people viewing
Last viewed: 20 hours ago
The core has a cylindrical shape, allowing the use of rectangular electric wires and large current copper plates. ■Features In addition to having ...
