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This section provides an overview for inductors (coil) as well as their applications and principles. Also, please take a look at the list of 40 inductor (coil) manufacturers and their company rankings. Here are the top-ranked inductor (coil) companies as of December, 2024: 1.SAGAMI ELEC CO., LTD., 2.HIOKI E.E. CORPORATION, 3.KOA Corporation.
Table of Contents
Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
An inductor (coil) is an electronic component. It is a coil of conductive wire wound around a magnetic core such as iron.
It is a basic electronic component like resistors, diodes, and capacitors, and is used in a high percentage of electronic devices. An inductor (coil) has several distinctive functions.
When a current tries to flow through an inductor (coil), it interferes with this flow, and conversely, when the current tries to decrease, it tries to increase it. In addition, when a signal with a high frequency tries to pass through the inductor, the inductor tries to block it.
Taking advantage of the above characteristics, inductors are used in a wide range of applications, such as automobiles, communication equipment, and precision instruments, to eliminate noise and select necessary signals in the circuits of electronic equipment.
Inductors (coils) are widely used in electrical and electronic circuits and are one of the essential components of industry. The following are examples of applications of inductors (Coil).
The power outlet in our homes provides 100 VAC voltage, but many electronic circuits operate on DC current. A device that converts AC to DC is called a switching power supply. A switching power supply contains an inductor (coil).
The inductor (coil) is used to smooth the current and eliminate unwanted high-frequency noise by taking advantage of its property to prevent sudden changes in the current.
Generally, two inductors (coils) are used in a transformer. When voltage is applied to the coil on the input side, a magnetic field is generated in the coil, which is induced in the inductor (coil) on the output side. The inductor (coil) on the output side receives the magnetic field and generates a voltage.
In this way, the high-voltage electrical energy on the input side is converted into low-voltage electrical energy on the output side. The voltage can be adjusted by changing the number of conductor turns of the inductor (coil).
Inductors (coils) are also used in communication circuits. Radio receiving circuits, for example, have built-in inductors, and received signals can be amplified by passing received radio waves through the inductors.
In addition, an inductor (coil) dedicated to high-frequency circuits, called a toroidal core, may be used in communication equipment. This inductor (coil) prevents leakage of magnetic flux and can produce efficient inductance in the desired frequency band.
An inductor (coil) consists of copper wire wound in a spiral shape. A ferromagnetic material such as iron or ferrite may be inserted in the center of the winding, which allows for miniaturization at the cost of increased weight.
According to Fleming's left-hand rule, when an electric current flows through an inductor (coil), a magnetic field is generated and converted into magnetic energy. The more turns and the smaller the diameter of the coil equates to a stronger magnetic flux and therefore the higher the magnetic energy.
When an alternating current flows through the inductor (coil), the magnetic field changes in accordance with the frequency. This magnetic field change generates an electromotive force, which is the self-induced electromotive force. The magnitude of the self-induced electromotive force varies depending on the size of the inductor and the number of conductor turns, and is called inductance, using the unit henry (H). The inductor (coil) acts to prevent the rate of change of the current over time.
Inserting an inductor (coil) in an AC circuit causes a phase delay. Also, when an inductor (coil) is inserted into a DC circuit, it interrupts the current during the transient period and maintains the current after the power supply is cut off.
There are several types of inductors (coil). The following are examples of inductor (coil) types.
An air-core coil is an inductor (coil) in which the center of the coil is hollow. Since the shape of the coil wire wound around the coil is free, self-induction can be enhanced. However, air coils tend to be large and are not often used except for high-frequency applications.
An iron-core coil is an inductor (coil) with an iron core in the center of the coil. The iron core enhances self-induction and can handle large amounts of power. Since the size can also be reduced, they are used in a wide range of applications.
Ferrite core inductors (coils) are inductors that use a magnetic core material called ferrite. Ferrite has high magnetic permeability at high frequencies, making it suitable for high-frequency circuits. They may also be designed as inductors for a specific frequency range, depending on the core material.
*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.
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.
Semigen, established in 2009, and based in New Hampshire, USA, is a manufacturer and supplier of semiconductors. The product portfolio includes a diverse range of attenuators, capacitors, couplers, surmount, filters, inductor coils, resistors, transmission lines, diodes, and barrier quads. The company also offers products with quality test and foundry with value-added services, design, repair, and supply solutions. The products are used in various industries which include military, aerospace, satcom, wireless, communication, medical, and industrial sectors.
Knowles Precision Devices, founded in 1985 in the USA, is a specialty component manufacturer of a wide variety of capacitors, microwave to millimeter wave components, thin film capacitors, and substrates. The company's performance microelectronics products include multi-layer ceramic capacitors, single-layer capacitors, trimmers, mm-wave filters, and resonators for use in critical applications in the military, medical, electric vehicle, and 5G market segments. Examples include radar, pacemakers, MRI equipment, electric vehicles, and mobile phone base stations.
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.
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.
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.
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.
INPAQ, founded in Taiwan, is a supplier of circuit protection components and antenna products. The company's product portfolio includes f Circuit Protection、EMI/EMC Solutions, Power Solutions and RF Antennas that are used for computing, communication, consumer electronics, and automotive electronics.The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Construction and Building. The company has 14 laboratories and test facilities in Taiwan and China including Sales and FAE support in Taiwan, China, Korea & North America.
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.
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.
ABCO Electronics, founded in 1973 in Gyeonggi-do, Korea, is a manufacturer of passive resistors and inductors. The company specializes in the production of inductors and resistors, offering a broad range of advanced electronic components. It holds ISO 9001 industry-recognized quality certifications for the consistency and performance of its products. The inductors and resistors manufactured are used for precision, durability, and stability, making them essential components in various electronic applications. These components find widespread use in industries such as telecommunications, automotive, and consumer electronics.
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.
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.
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.
PIC Proximity Instrumentation Controls Kontaktbauelemente GmbH, established in 1976 and based in Wendelstein, Germany, is a manufacturer and supplier of reed switches and sensor technology. The company’s product portfolio includes power reed switches, stainless steel floats, and flange mounts. These products are used in various applications, including automation, sports and fitness equipment, and household appliances such as washing machines and refrigerators. The company is DIN ISO 9001:2015 certified, with global sales partners in the United States, China, and South Africa.
Sagami ELEC Co Ltd, established in 1956 at Yokohama, Japan is a manufacturer of electronic components for various inductor coils. The company since inception specializes in manufacturing various advanced coils for inductors and transformers and AC/DC converters. Some of their products include SMD power inductors, metallic magnetic inductors, Wire-wound chip inductors, ZETA transformers and Pulse drive transformers for automotive equipment. These electronic components find multiple applications in TV & monitor, portable audio, camera, car navigation and Smartphones.These equipment come with enhanced performance, firm lifespan, magnetic flows and uninterrupted power supply to the sources.
GETRA Geräte- und Trafobau GmbH, established in 1948 and headquartered in Au in der Hallertau, Germany is a manufacturer of electronic equipment and transformers. The company's main products include a wide range of application- and feature-specific Transformers, DC power supply units, and other transformer components. Apart from its standard components, it also engineers and manufactures custom components as well as full turnkey transformer installations. The company's notable clients include MGV Stromversorgungen GmbH, Siemens AG, and Bosch Rexroth AG.
EREMU, SA, founded in 1958 and located in Astigarraga, Guipuzcoa, is a manufacturer and repairer of electrical transformers and other electrical equipment. The company offers a range of products, including low-voltage transformers, automatic voltage regulators, cast resin transformers, three-phase autotransformers, and light flow regulators. These transformers have applications in laboratory power supply, aeronautics and defense, renewable energy, telecommunications, and solutions to electrical network issues. It complies with international manufacturing and testing standards, such as IEC, UNE, NEMA, and UL.
KOA Corporation, established in 1940 in Minowa-machi, Japan, is a manufacturer of electronic components. The company provides an extensive product range including resistors, current sense shunt resistors, fuses, thermal sensors, and inductors. These quality components find applications in industries such as automotive, ecology, energy conservation, telecommunications, power supply units, and home appliances. Operating under the guiding principles of circulation, finite resources, harmony, and enrichment, it continues to provide sustainable electronic solutions to cater to the ever-changing demands of global industries.
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.
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.
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.
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.
3L Electronic Corporation, headquartered in Taipei, Taiwan, is a manufacturer of magnetic components such as inductors, coils, transformers, and EMI filters. Their extensive product range caters to various industries, including telecommunications, automotive, consumer electronics, and industrial applications. Some of their notable products include microcontrollers, sensors, connectors, and power management solutions. They also offer services including customization, design, and engineering support. 3L Electronic Corporation is ISO 9001 and also IATF 16949 certified.
Semelab, established in 1989 and headquartered in Paris, France, is a manufacturer and supplier of connectors and cable assemblies. Their comprehensive product range includes a range of connectors, such as board-to-board, cable, and high-speed connectors, catering to diverse applications in telecommunications, industrial automation, and medical devices. Additionally, Semelab offers various cable assemblies, including custom and pre-terminated cable assemblies, facilitating seamless electronic device connections. Precision components like precision pins, sockets, and ferrules are also available. Semelab's products are adopted in telecommunications, industrial automation, medical devices, and test equipment industries, providing dependable and accurate interconnect solutions.
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.
Cefem Group, founded in 1987 and headquartered at its headquarters in La Chapelle, Saint Michel de Boulogne, France, is a manufacturer of electrical equipment and industry-scale measuring solutions. The company specializes in passive components for power modulation, power conversion, industrial efficiency, and safety equipment. Its products include transformers, safety switches, and photovoltaic inverters. These products are used in renewable solar photovoltaic power systems, environmental quality measurement systems for municipal water supply infrastructure, and high-speed electrical rail systems.
SAMSUNG ELECTRO-MECHANICS, established in 1973 and based in Suwon, South Korea, is a manufacturer and supplier of MLCCs (Multilayer Ceramic Capacitors). The company's product portfolio includes chip resistors, camera modules, and MLCCs with high bending strength. These products are used in various industries, including consumer electronics, automotive, and telecommunications. The company is ISO 9001, ISO 14001, and ISO 45001 certified for its quality, safety, and environmental management, with a global network in various countries including the United States, Singapore, and India.
Hioki E.E. Corporation was founded in 1935 and headquartered in Ueda, Nagano. Hioki provides testing & analysis, manufacturing & inspection, and equipment maintenance to industries including mobility, battery, motor, energy, electronic components, and infrastructure. Hioki’s has 10 primary product categories which are: recorders and data loggers including oscilloscopes, LCR/Resistance Meters, safety testing including signal generators and calibrators, power meters including power quality analyzers, probes & sensors, optical & PV maintenance & telecommunication, environmental measuring, DMM & testers & field measuring, IoT & new solutions & meter relay, and bare board & package testing.
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.
Electronic Surplus, founded in 1946 and headquartered in Mentor, Ohio, United States, is a retail supplier of electronic components and parts. The company offers over 60,000 products, including capacitors, circuit breakers, and PC Card Edge Connectors. Its products are used by electronics professionals and hobbyists. It also purchases large quantities of surplus electronics components, including obsolete parts, discontinued products, and military parts. It also sources electronic components it doesn't currently have available. Its products are available for purchase in limited and large quantities via its online store.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | HIOKI E.E. CORPORATION |
9.4%
|
| 2 | SAGAMI ELEC CO., LTD. |
9.4%
|
| 3 | KOA Corporation |
6.7%
|
| 4 | IAS GmbH |
6.0%
|
| 5 | CEFEM GROUP |
5.4%
|
| 6 | Wood Valley Works |
4.7%
|
| 7 | KV Electronics |
4.7%
|
| 8 | Electronic Surplus |
4.7%
|
| 9 | Shenzhen Sunlord Electronics Co.,Ltd. |
4.7%
|
| 10 | Murata Manufacturing Co., Ltd. |
4.7%
|
Derivation Method
The ranking is calculated based on the click share within the inductor (coil) page as of December 2024. 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 (%) |
|---|---|---|
|
Japan
|
7 | 23.3% |
|
United States of America
|
6 | 20.0% |
|
Taiwan
|
5 | 16.7% |
|
Germany
|
4 | 13.3% |
|
Spain
|
2 | 6.7% |
|
Republic of Korea
|
2 | 6.7% |
|
China
|
1 | 3.3% |
France
|
1 | 3.3% |
United Kingdom
|
1 | 3.3% |
|
Thailand
|
1 | 3.3% |
333 products found - Page 6
333 products - Page 6
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