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This section provides an overview for common mode chokes as well as their applications and principles. Also, please take a look at the list of 35 common mode choke manufacturers and their company rankings. Here are the top-ranked common mode choke companies as of May, 2025: 1.OKAYA ELECTRIC INDUSTRIES CO., LTD., 2.Renco Electronics Inc., 3.Yuan Dean Scientific Co., LTD..
Table of Contents
A common mode choke is a filter designed to reduce a specific type of noise known as common mode noise.
Common mode noise is noise that travels over power and signal lines, characterized by its flow from the reference ground, through the wiring substrate, and back to the reference ground.
The core component of a common mode choke is an inductor, which effectively interrupts the flow of this noise.
Common mode chokes are essential in noise suppression and electromagnetic compatibility (EMC) measures for electronic equipment.
Common mode chokes are implemented in many electronic devices as part of EMC countermeasures, ensuring normal operation even under electromagnetic interference. EMC, or electromagnetic compatibility, refers to a device’s ability to neither emit nor be affected by electromagnetic interference. Such measures are critical in a wide range of electronic equipment, including home appliances, office automation equipment, and vehicle machinery.
Specifically, common mode chokes are utilized to eliminate common mode noise, as described below.
Conducted noise transmitted through power and signal lines is classified into two types: differential mode noise and common mode noise.
In an electrical circuit, the current generated in one part of the circuit passes through the load and returns through another path. This is known as differential mode, and noise that flows in this manner is called differential mode noise.
Conversely, in common mode, the current does not loop through the circuit but instead flows due to capacitance between the reference earth and the wiring on the board, returning to the reference earth from the opposite side.
High-frequency noise, in particular, can transmit as common mode noise due to lower impedance at these frequencies.
Common mode chokes are filters designed specifically to eliminate this type of noise. They consist of two conductors wound around a core. When currents flow in opposite directions (differential mode), their magnetic fluxes cancel each other out, and the choke does not filter. However, when currents flow in the same direction (common mode), the magnetic fluxes reinforce each other, acting as an inductor to filter out the noise.
*Including some distributors, etc.
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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.
Bourns, Inc. is a family-owned company founded in 1947 and currently headquartered in Riverside, California. Bourns is a developer, manufacturer, and supplier of electronic components for several industries including automotive, industrial, instrumentation, medical, consumer, and portable electronics. Bourns operates in 4 market segments: automotive, circuit protection, power conversion, and sensing. The automotive segment produces sensors for almost every use in vehicles including steering, stability, fuel management, and temperature control. Power conversion segment products are used in renewable energy and automotive power. Sensing products are also used in heavy equipment, medical equipment, and welding equipment.
Renco Electronics Inc. was founded in 1955 and is headquartered in Florida, United States, as a manufacturer of quality inductors, transformers, and subassemblies for thousands of products from aerospace systems to consumer appliances, and everything in between. The end markets and customer base of Renco exhibit a high degree of complementarity with the current business operations. This presents the possibility of enhancing meaningful account relationships and exploring cross-selling prospects between our two organizations. The efficiency of Renco's design and manufacturing cycle is greatly improved by its robust worldwide network of proprietary supplier partnerships.
Bel Fuse Inc. was founded in 1949 and is currently headquartered in Jersey City, New Jersey. The company designs, manufactures and distributes electronics and connectivity devices to global markets including telecommunications, commercial aerospace, transportation, and high-speed data transmission. The company sells products in 16 product segments, including optical connectivity, electrical connectivity, magnetics, power supplies, and others. The company also offers an online resource library for product configuration assistance including technical aspects and drawings, video libraries, and assembly instructions.
Hang Tung Electronics Co., Ltd., established in 1987 and headquartered in Dongguan, Guangdong, China, is a developer and manufacturer of power transformers, switching components, and related technology. The company's primary products include high-frequency transformers, PD chargers and power adapters, and fast charging units. These products are used in electrical vehicle battery charging units, LED lighting products, and numerous household appliances. The company's services include the development and manufacture of custom products as well as contract manufacturing.
Shaanxi Gold-Stone Electronics Co. Ltd., established in 2002 and headquartered in Xi'an, Shaanxi, China, is a manufacturer of magnetic components. The company's main products include magnetic cores, electronic transformers, and common mode chokes. It also produces ferrite core clamps, nanocrystalline cores, and bobbins, as well as custom application-specific magnetic components. These products are used in LED lighting, automotive electronics, and medical appliances, among many others. The company's services include private label manufacturing, and it also offers full OEM services.
Yuan Dean Scientific Co. Ltd., established in 1990 and based in Tainan, Taiwan, is a manufacturer of electronic components. Its products include DC-DC converters, AC-DC converters, RJ45 magnetics, LAN filters, and high-frequency transformers. It also produces POE transformers, inductors, and LED drivers for the medical, railway, and POE sectors. The company holds ISO 9001, ISO 14001, and IATF16949 certifications. It also conducts EMC and EMI/EMS/EDS lab tests to confirm compliance with standards and regulations.
Cyntec, established in 1991 in Taiwan, China, is a manufacturer and supplier of miniaturized and integrated products. They specialize in magnetic components, passive components, power modules, and RF & optical modules, serving various markets such as cloud computing, automotive, IoT, and more. The company’s products are known for their high performance, power handling, packaging density, and accuracy. Cyntec also utilizes advanced design and simulation techniques, adhering to international standards like ISO9001 & ISO/TS 16949, ISO 14001, OHSAS 18000, and IECQ QC080000. Their social responsibility, non-discrimination policies, and environmental consciousness further reinforce their esteem.
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.
OKAYA ELECTRIC INDUSTRIES., LTD was founded in 1939 in Japan. OKAYA produces a range of electronic parts for various industries. Some of these include noise suppression products, surge protective devices, display products including LEDs, and micro sensors with LED lights. OKAYA has offices across Eastern Asia and in the United States.
Vacuumschmelze (VAC), founded in Germany, in 1913 is a manufacturer of magnetic alloys and their downstream solutions. The company's product portfolio includes Magnetic Alloys, Photovoltaic, Common Mode Chokes, Stamped Parts, Magnet Assemblies, and Inductive Components. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company also provides equipment repair, instrumentation system upgrades, and retrofits, preventive maintenance, and warranty services.
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).
TDK Corporation, established in 1935, is a manufacturer of electronic solutions for the smart society based in Tokyo, Japan. The company is a part of the TDK Group, which has over 250 locations in more than 30 countries worldwide and employs over 103,000 people. They offer a wide range of products, including sensors, power supplies, and magnetic application products. The robotics industry is evolving at a rapid pace, and they are now offering , a robot development platform equipped with a variety of sensors essential to the accurate operation of robots, enabling more efficiency across a wide range of robot development.
Proterial, Ltd. was founded in 1956 and is headquartered in Tokyo, Japan, as a manufacturer of iron and metals, producing high-grade special steel and various types of magnets. The company's offerings include premium metal products and materials, industrial items with unique performance, magnetic materials, superior functional components and equipment, wires, cables, and associated products. The company also provides diverse items, including semiconductor package components, parts for injection molding machines, energy-related products, automotive castings and components, rare-earth magnets, piping components, industrial equipment, and rolling stock products.
Nippon Chemi-Con Corporation. was established in 1931 and is a manufacturer of aluminum-based products, precision mechanical components, and electronics equipment based in Shinagawa, Tokyo, Japan. The company's product portofolio offers various products such as aluminum electrolytic capacitors, multilayer ceramic capacitors, inductors, camera module, and silicon wafer. The products have been used in various application such as electric power steering, direct injection engine control, solar power inverter, switching power supply, and automotive micro computer power supply. The company has passed the ISO 9001, IATF 16949, and ISO 14001 standards certification. The products are manufactured under the compliance of RoHS and REACH/SVHC standards.
Sumida Group, founded in 1956 with headquarters in Japan, is a manufacturer of inductive components and modules. The company's wide range of products includes power transformers, power inductors, sensors, actuators, and components for automotive and medical purposes. Sumida’s products are used in a wide range of applications and electronic devices within the consumer electronics, automotive, medical, and industrial markets. In 2021, Sumida was recognized with a Quality Award from CODICO and a Supplier Quality Excellence Award from General Motors.
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 Electronics, established in 1995, and based in Taoyuan, Taiwan, is a manufacturer of magnetic components. The company's product portfolio includes power inductors, common mode choke, chip inductors, EMI filters and planar transformers. The products are used in 5G systems, automotive applications, LED lighting and smart meter applications. It is IATF certified and offers customer care services in case of any issue. Coilmaster facilities are built in accordance with sustainable methods such as solar panels for electricity, water recycling systems, waste recycling systems and external insulation coatings that reduce the use of air conditioners.
Murata Manufacturing Co., Ltd. (Murata Manufacturing) was founded in 1944 and is headquartered in Nagaokakyo, Japan. Murata Manufacturing designs, manufactures, and sells ceramic-based passive electronic components and solutions globally. The company operates through components, modules, and others segments, serving communications, mobility, industrial, healthcare, and personal electronics customers. They company's product offerings include noise suppression products, quartz devices,RFID devices, phase shifters, and wireless connectivity platforms. Services such as webinars and video library are also available for existing and potential customers alike.
West Coast Magnetics, headquartered in Stockton, California, is a manufacturer of transformers and inductors and was founded in 1974. They produce electronic components including filters, coils, transformers, inductors, and also chokes, which are available in various frequency, power, and voltage ratings, suitable for wireless charging, power filtering, buck-boost, and high ripple applications. West Coast Magnetics is ISO 9001 and ISO 13485 certified, ITAR registered, and also complies with RoHS regulations.
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.
Laird Performance Materials, also known as Laird PM, specializes in heat and EMI protection for advanced electronics in automotive, aerospace and defense, telecommunications, data infrastructure, precision and computing, medical, and consumer electronics industries. As a global organization, Laird PM, focuses on developing, manufacturing, selling, and supplying precision-engineered materials used by manufacturers to serve their electronic markets. Laird PM designs and develops products test and measurement instrumentation to create models and product performance simulations to improve product performance, reliability, and flexibility while reducing development time and cost.
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.
KV Electronics, founded in Thailand in 1988, is a supplier of magnetics components. The company's product portfolio includes a diverse array of transformers and inductors for various applications, including power conversion, signal filtering, and impedance matching, ferrite cores and materials are used to optimize electromagnetic performance and enhance the efficiency of magnetic circuits and customized magnetic component solutions. It also offers guidance on component selection, materials, and configurations to address unique technical challenges and achieve project-specific goals.
Ranking as of May 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | OKAYA ELECTRIC INDUSTRIES CO., LTD. |
5.4%
|
| 2 | Renco Electronics Inc. |
5.2%
|
| 3 | Yuan Dean Scientific Co., LTD. |
5.0%
|
| 4 | Cyntec Co., Ltd. |
4.5%
|
| 5 | Vishay Intertechnology, Inc., |
4.3%
|
| 6 | Coilmaster Electronics Co., Ltd |
4.1%
|
| 7 | Bourns, Inc |
3.9%
|
| 8 | SCHURTER |
3.5%
|
| 9 | Hang Tung Electronics Co., Ltd. |
3.2%
|
| 10 | TDK Corporation. |
3.2%
|
Derivation Method
The ranking is calculated based on the click share within the common mode choke page as of May 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 (%) |
|---|---|---|
|
Taiwan
|
7 | 22.6% |
|
China
|
6 | 19.4% |
|
Japan
|
6 | 19.4% |
|
United States of America
|
4 | 12.9% |
|
Germany
|
2 | 6.5% |
|
India
|
2 | 6.5% |
|
Switzerland
|
1 | 3.2% |
|
Australia
|
1 | 3.2% |
|
Spain
|
1 | 3.2% |
|
Thailand
|
1 | 3.2% |
92 products found
92 products
Alphatrans Co., Ltd.
180+ people viewing
Last viewed: 8 hours ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
Alphatrans Co., Ltd.
150+ people viewing
Last viewed: 1 day ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
Würth Elektronik
170+ people viewing
■Features ・Current compensation data line filter ・High common mode noise suppression at high frequencies ・Small effect on high-speed signals due...
Alphatrans Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
Würth Elektronik
190+ people viewing
Last viewed: 10 hours ago
■Features ・Nanocrystalline core material with extremely high permeability ・Improved insulation with plastic case and winding spacer ・High and st...
Alphatrans Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
Sanmori Gen Electronics Co., Ltd.
340+ people viewing
Last viewed: 40 minutes ago
■Features ・Safety distance is 0.8mm or more ・Excellent high frequency impedance characteristics ・Blister box packaging ・Can be used for white g...
2 models listed
Alphatrans Co., Ltd.
140+ people viewing
Last viewed: 1 day ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
United Electronics Co., Ltd.
360+ people viewing
Last viewed: 1 day ago
■ Characteristics ・ Small, high energy storage, low DC resistance ・ Distribution electricity capacity is small and high inductance ・ Large elect...
2 models listed
Sanmori Gen Electronics Co., Ltd.
410+ people viewing
Last viewed: 8 hours ago
■Features ・Fully automatic winding ・Closed magnetic circuit, little magnetic leakage, and excellent impedance characteristics ・Blister box packa...
4 models listed
United Electronics Co., Ltd.
230+ people viewing
Last viewed: 19 hours ago
■ Characteristics ・ Small, high energy storage, low DC resistance ・ Distribution electricity capacity is small and high inductance ・ Large elect...
Alphatrans Co., Ltd.
150+ people viewing
Last viewed: 14 hours ago
The toroidal coil shape makes it compact and space-saving, while ensuring voltage resistance between windings and can be used in the same way as an...
Nippon Chemi-Con Corporation.
2340+ people viewing
Last viewed: 1 hour ago
By improving the impedance in the 150kHz to 1MHz frequency band compared to the conventional FL-V series, noise removal performance in the low freq...
10 models listed
Nippon Chemi-Con Corporation.
1990+ people viewing
Last viewed: 28 minutes ago
This is a common mode choke coil that uses nanocrystalline alloy (nanocrystal) with high magnetic permeability (31,000μ) as the core material. A la...
10 models listed
Nippon Chemi-Con Corporation.
2170+ people viewing
Last viewed: 21 minutes ago
Significant downsizing has been achieved with a high magnetic permeability core. A small number of turns ensures high inductance, and low direct cu...
10 models listed
Kami Electronics Industry Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
■Features ・Line filter of switching power supply ・Common mode noise countermeasures for various electronic devices ・Switching power supply radia...
Sanmori Gen Electronics Co., Ltd.
690+ people viewing
Last viewed: 4 hours ago
■Product features ・Fully automatic winding possible ・Closed magnetic core, small magnetic leakage ・The core is not subjected to stress from the ...
6 models listed
Sanmori Gen Electronics Co., Ltd.
400+ people viewing
Last viewed: 5 hours ago
■Product features ・High L value ・Closed magnetic core, small magnetic leakage ・The core is protected by the case, ensuring stable performance ・...
4 models listed
Sanshin Electric Co., Ltd.
220+ people viewing
Last viewed: 1 day ago
■Applications ・Common mode filter for switching power supplies ・Common mode filter for inverters and IH home appliances ・For noise countermeasur...
Sanshin Electric Co., Ltd.
250+ people viewing
Last viewed: 8 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...
SHT Co., Ltd.
170+ people viewing
Last viewed: 1 day 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 ...
Sanmori Gen Electronics Co., Ltd.
270+ people viewing
Last viewed: 3 hours ago
■Product features ・The Ni-Zn ferrite core, which has excellent high-frequency characteristics, is designed to reduce parasitic capacitance between...
Würth Elektronik
130+ people viewing
Last viewed: 12 hours ago
■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
130+ people viewing
Last viewed: 22 hours ago
■Features ・Current compensation data line filter ・High common mode noise suppression at high frequencies ・Low RDC design ・AEC-Q200 ・Automobile...
Ozeki Co., Ltd.
100+ people viewing
Last viewed: 16 hours ago
FK coils are ideal for removing common mode noise from power lines and preventing malfunctions in various measuring instruments and system equipmen...
Ozeki Co., Ltd.
80+ people viewing
Last viewed: 8 hours ago
A common mode coil that uses a high magnetic permeability core and achieves further miniaturization. ■Applications ・For common mode noise counter...
Ozeki Co., Ltd.
90+ people viewing
Last viewed: 13 hours ago
Common mode coil with reduced coil height for applications that require thinness ■Applications ・For common mode noise countermeasures ・Applicati...
Ozeki Co., Ltd.
90+ people viewing
Last viewed: 21 hours ago
FKY coils are ideal for removing common mode from 3-phase power lines and preventing malfunctions in various industrial equipment. ■Applications ...
