All Categories
History
This section provides an overview for power inductors as well as their applications and principles. Also, please take a look at the list of 42 power inductor manufacturers and their company rankings. Here are the top-ranked power inductor companies as of December, 2024: 1.Inductor Supply, Inc, 2.Pico Electronics, 3.API Delevan.
Table of Contents
A power inductor is an element of a coil used in a power circuit among inductors.
They are also called power chokes. There are three basic types of construction: windings formed by lamination technology, windings on a bar-shaped core, and windings on a drum-shaped core.
Inductors, including power inductors, have a property that allows DC current to pass through, but prevents AC current from passing through. This property is used to eliminate high-frequency noise in circuits for voltage conversion.
Impedance is a measure of the resistance to the passage of alternating current, and the following formula for the impedance of an inductor easily explains this property.
Impedance of inductor [Ω]ZL=jωL
(L: inductance [H] ω: angular frequency [rad/s])
Power inductors are used in a wide range of fields such as home appliances, communication equipment, and transportation equipment to stabilize the voltage supply of power circuits. Examples include smartphones and automobiles.
Controlling the voltage of a DC power supply is very important for any electronic device. The reason is that electronic devices have a range of supply voltages that can guarantee normal operation, and the ability to supply the proper voltage to each component affects stable circuit operation and the life of the equipment.
A DC-DC converter is a circuit that converts voltage, and the supply of stable voltage depends on the performance of the Power Inductor. There are two types of converter circuits: a step-down type that lowers the voltage, and a step-up type that raises the voltage. Both types contain switching elements, diodes, and power inductors as components.
When an alternating current flows through an inductor, electromagnetic induction generates an induced electromotive force proportional to the time rate of change of the current.
Induced electromotive force [V]e = -L* (dI/dt)
(L: inductance [H] I: current [A] t: time [sec])
Since the direction of the induced electromotive force is the direction that counteracts the original magnetic flux change (Lenz's law), it is marked with a minus sign to indicate this explicitly. An induced electromotive force is generated in the direction that cancels the current change, making it difficult for the alternating current to flow.
The proportionality constant involved in the induced electromotive force is the inductance (unit: Henry [H]). It is expressed as the ability to convert electrical energy into magnetic energy.
To increase inductance, there are several methods, such as "increasing the cross-sectional area of the coil," "increasing the number of turns," and "adding a core to increase the magnetic permeability." For use in converters, the inductance is determined according to the switching frequency.
Compared to inductors for other applications, power inductors are characterized by larger external dimensions and greater inductance, and are designed to have characteristics more suitable for a stable supply of DC voltage.
When selecting a power inductor, first consider the inductance value and the allowable current flowing through the inductor. In addition to these factors, the shape and frequency characteristics of the inductance must also be taken into account to determine the optimum component. The decision is based on how much efficiency, output characteristics, and noise immunity are required for the DC-DC converter to be designed.
For power inductors, the allowable DC superimposed current and allowable temperature rise current are specified.
For inductors:
Therefore, not only the inductance value but also the allowable current is important. Manufacturers produce a wide variety of inductors for a wide range of applications. For example, a component with a large inductance has a high efficiency due to low DC loss, but there is a tradeoff in that the external dimensions of the component are larger and more heat is generated. These points also require careful attention.
Ideally, the voltage value of the DC power supply of each circuit group to be designed should be maintained at a constant value at all times, but this is rarely possible in reality. However, it is important to select devices with excellent characteristics to prevent problems before they occur.
*Including some distributors, etc.
Sort by Features
Sort by Area
Inductor Supply Inc. (ISI) is a supplier, and manufacturer of inductors, coils, chokes, transformers, and related magnetic components located in Garden Grove, California. Some of their products include power inductors which are used in power supplies and DC-DC converters, also RF inductors which are used in RF circuits, and common mode chokes used in power supplies. The company adheres to MIL-I-45208 quality assurance standards, ensuring its products meet military specifications.
API Delevan, founded in 1947 and headquartered in East Aurora, New York, is a manufacturer of coil winding & resolver technologies Catering to aerospace, defense, medical, and industrial sectors, the company's provisions includes RF and Power Inductors for signal filtering, Resolvers converting motion to signals, Transformers for energy transfer, Magnetic Components, and Custom Coils tailored to specific needs. These offerings find applications in radar, flight controls, power systems, and more.
Pico Electronics was founded in 1967 and is headquartered in Pelham, New York. Pico is a developer of miniature and ultra-miniature electronics used in aerospace, power generation, and military applications. The company specializes in miniature transformers and inductors designed to work in extreme temperature environments ranging from -55°C to +85°C (-67°F to +185°F). Pico Electronics also specializes in continued miniaturization. Other product listings include DC-DC converters, AC-DC power supplies, and power factor-corrected modules. The company also produces QPL MIL Spec products to military grade specifications such as transformers and inductors.
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.
Abracon LLC, founded in 1992 with headquarters in the USA, is an ISO 9001:2015 manufacturer of precision electronic components for the aerospace, defense, security, medical, and transport markets worldwide. The company's core products include RADAR and LIDAR systems, radio communications, datalinks, aircraft computing, and head-up displays. Transportation products include crystals, oscillators, antennas, and inductors for transportation applications in harsh environments. Abracon LLC's medical solutions include hospital beds, bedside patient monitors, MRIs, and surgery-assisted robotics.
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.
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.
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.
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.
NIC Components Corp., and Nippon Industries Co. Ltd. have collaborated for over 37 years to design and manufacture passive components, including capacitors, resistors, and magnetics. Established in the USA in 1982, NIC has expanded its business to the custom speciality that meets the demands of today’s emerging and latest technology. Their regional offices can be found in Canada, Malaysia, India, Mexico, China, etc. All of their products are built with more features and are certified with different ISO certifications. They also assist their customers in component selection through live support.
ALPS ALPINE CO., established in 1948, is a manufacturer and supplier of sensors＆communication, modules＆systems, and components based in Tokyo, Japan. The company serves the energy, healthcare, automotive, mobile, and consumer electronics domains, where they combine and build on core device technology, including human-machine interfaces, SENSORING™, and connectivity. For example, in the healthcare industry, they supply components for medical equipment, including control switches, sensors, lenses, and joysticks, and the Senclear™ Microfluidic Devices for drug discovery and development. Their power conversion modules, current sensors inverters, and converters are used in the energy industry in storage batteries, solar power systems, and electric vehicle charging systems.
Manchester Organics Ltd., established in 1951 and headquartered in Tokyo, Japan, is a manufacturer of mechanical components and electronic devices. Starting as Japan's first manufacturer specializing in miniature ball bearings, the company has grown and expanded its portfolio to motors, sensors, access products, electronic devices and components like semiconductors and sensors. These products have various applications ranging from modern homes and offices to information and telecommunication devices, robotics and automobiles. The company has developed Electro Mechanics Solution, that integrates control technology with machine and electronic technology for manufacturing precision 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.
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.
Panasonic Industry Europe is the European branch of Panasonic, a global manufacturer of electronics and houseware, originally founded in 1918. Panasonic Industry Europe manufactures in 4 categories: components, devices, energy & building, and automation devices & solutions. Components include relays, capacitors, resistors, sensors, switches, connectors, couplers. Devices include wireless connectivity, e-bike systems, motors, compressors, thermal solutions, GPS antennas, as well as electronic materials. Energy & building includes batteries, fuel cells, solar sells, power tools, and home IoT. Automation devices & solutions include sensors for factory automation, industrial motors, laser welding, and more.
Atesys-Montoux, established in 1987 and headquartered in Montoux, France, is a manufacturer of electronic components and solutions for power applications. Its product range includes power capacitors for voltage stabilization, transformers, inductors for energy storage, electronics for power such as converters and control systems, as well as customized solutions. These offerings cater to industries such as power generation, transmission, renewable energy, industrial automation, and the medical sector. The company also provides services like high voltage testing, thermal tests, and high voltage tests.
NEOSID., Ltd., founded in Germany, in 1923 is a manufacturer of custom ferrites, inductances and RFID transponders. The company's product portfolio includes Shielded Inductors, Air core coils, Rod core chokes, Transponder coils and Filter and Coil Kits. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company provides services such as Product Selection Guidance, Engineering Support, New Product Design and Development and Custom Manufacturing.
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.
Zhejiang Jiakang Electronics Co. Ltd., established in 1986 and headquartered in Jiaxing City, Zhejiang Province, China, is a manufacturer of electronic components. The company provides numerous products, including microwave dielectric ceramic components, piezoelectric sensors, and ceramic frequency components. With an annual production capacity of 800 million pieces, its products are exported globally. It collaborates with international partners such as Samsung, Whirlpool, Denso, HID, and Emerson, while also strictly adhering to ISO9001, ISO14001, and IATF16949 quality management system standards.
Universal Microelectronics, established in 1984 and based in Taiwan, China, is a manufacturer and supplier of power supplies and light devices. The product portfolio includes a diverse range of power supplies, magnetic components, photonics, EMS, DMS, radar products, and LED lights. The company products are ISO certified with other certifications and green product declarations for environment friendly solutions. The products are used in various industries which include the marine, medical, and light industry
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.
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.
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.
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.
MinebeaMitsumi Inc. was incorporated in 1951in Japan and manufactures and supplies machined components, and electronic devices and components globally. It operates through four segments: machined components, electronic devices and components, MITSUMI Business, and the U-Shin business segment. MinebeaMitsumi specializes in bearing products including spherical, roller, rod end, and ball bearings for aerospace. MinebeaMitsumi also produces products including precision mechanical assemblies, fasteners, other special components including clutches and brakes, motors, blowers, sensors and lighting devices. Additionally, MinebeaMitsumi offers its products for use in PCs and peripheral equipment, information and telecommunications equipment, household electrical appliances, automobiles, and aerospace.
Li Tone Electronics, established in 1986, is a manufacturer and supplier of electronic components and power supplies, headquartered in New Taipei City, Taiwan. Their product range includes high-frequency transformers, power inductors & coils, AC/DC adapters, and LED drivers. These products can be applied in industries such as telecommunications, consumer electronics, industrial automation, and automotive. Li Tone Electronics is certified with ISO 9001 for quality management and ISO 14001 for environmental management.
YAGEO Group, a global supplier of passive components, including chip resistors, MLCC, through-hole resistors, wireless components, inductors and coils, established in 1977 and is based in Taiwan. The Group serves multiple industries, including automotive, telecommunications, smart manufacturing, and power and energy. They offer complete solutions for body and convenience, powertrain and safety, comfort and infotainment, and e-mobility in the automotive industry. They have established a strong global presence with 29 sales offices, 51 production sites, 20 research and development centers, and 40,000 employees worldwide.
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.
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).
Susumu CO., LTD., founded in Kyoto, Japan, in 1964 is a manufacturer of thin film products. The company's product portfolio includes thin film mount resisters, power choke coils, sample kits, and high frequency surface mount components. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company provides services such as Product Selection Guidance, Engineering Support, New Product Design and Development and Custom Manufacturing.
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.
TAIYO YUDEN CO., LTD. was founded in 1950 and is headquartered in Kyobashi, Chuo-ku, Tokyo is a manufacturer of electronic components. The company offers a diverse product catalog including conductive polymer hybrid aluminum electrolytic capacitors, noise suppression components, and multilayer ceramic capacitors. These products have applications in telecommunication, automotive, and medical equipment. In 2023, the company announced that it had started mass production of three items in two sizes, including the multilayer metal power inductor.
MITSUMI ELECTRIC CO., LTD was founded in 1954 and is a manufacturer of electrical machinery and industrial products based in Tama, Tokyo, Japan. The company manufactures various products such as roller bearings, LCD backlight, electromagnetic clutches, automotive fan motors, and mini coaxial connectors. The products are used in various field of industries such as medical, metal manufacture, optical industry, and hygienic management systems. The company has obtained standards certificates including ISO 14001, QS 9000, and WML C07.
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.
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.
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.
Passive System Alliance Properity Dielectric Co. Ltd. is a passive component manufacturer established in 1990 and headquartered in Yang-Mei, TaoYuan, Taiwan. In 2005, the company entered into a strategic alliance with WTC, and in 2008, it formally merged with Hongdian Electronics, expanding its sales scope from dielectric ceramic powder, semiconducting ceramic capacitor tiles, multilayer ceramic capacitors, and chip resistors to inductors. The company is capable of meeting market demands by initiating material research and development and integrating and developing electronic components as required by customers.
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.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Pico Electronics |
5.6%
|
| 2 | Inductor Supply, Inc |
5.3%
|
| 3 | API Delevan |
3.7%
|
| 4 | NIC Components Corp. |
3.5%
|
| 5 | Triad Magnetics |
3.4%
|
| 6 | Li Tone Electronics |
3.3%
|
| 7 | Viking Tech Corporation |
2.9%
|
| 8 | Abracon |
2.9%
|
| 9 | King Core |
2.8%
|
| 10 | Transko Electronics |
2.6%
|
Derivation Method
The ranking is calculated based on the click share within the power inductor 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 (%) |
|---|---|---|
|
United States of America
|
11 | 31.4% |
|
Japan
|
9 | 25.7% |
|
Taiwan
|
8 | 22.9% |
|
Germany
|
2 | 5.7% |
|
China
|
2 | 5.7% |
|
Republic of Korea
|
1 | 2.9% |
|
France
|
1 | 2.9% |
|
Australia
|
1 | 2.9% |
210 products found - Page 4
210 products - Page 4
Taiyo Yuden Energy Device Co., Ltd.
10+ people viewing
Last viewed: 1 day ago
■Features Uses metallic magnetic material with excellent DC superimposition characteristics ■Main uses ・Medical devices (International Classifica...
Würth Elektronik
10+ people viewing
Last viewed: 21 hours ago
Standard Response
■Features ・Ultra low R DC and R AC ・AEC-Q 200 certified ・Automobile approved ■Application ・Air conditioner, air conditioning control unit, ven...
Tokin America, Inc
520+ people viewing
Last viewed: 3 hours ago
■Summary This is a high-performance inductor that is compact, high-power, and energy-saving by utilizing material technologies such as our unique h...
10 models listed
