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This section provides an overview for pulse transformers as well as their applications and principles. Also, please take a look at the list of 28 pulse transformer manufacturers and their company rankings. Here are the top-ranked pulse transformer companies as of December, 2024: 1.Custom Coils, 2.Mauli Power System, 3.Jefferson Electric Inc.
Table of Contents
Pulse Transformers are transformers that are not intended to transmit power, but rather AC signals on a pulse waveform.
It is mainly installed in communication circuits within electronic equipment. Pulse Transformers consist of a magnetic core and windings, with two windings, a primary winding and a secondary winding, wound around the magnetic core. Pulse Transformers have few moving parts or aging element parts, making them high-life and highly reliable electronic components.
It is used to transmit signals while ensuring insulation between the input signal source and the output signal. A transformer ratio of 1:1 is mostly used. Pulse Transformers, like Power Transformers, are not used for the purpose of transmitting power, so the components can be made smaller.
Pulse Transformers are used in communication circuits within electronic equipment as transmission media for sending and receiving communication signals. They are mainly used in communication circuits in electronic equipment that use long-distance cables for communication, such as LAN and Ethernet communication.
When long-distance cables are used for communication, they are easily affected by external noise, so Pulse Transformers are used to insulate the input and output sides of communication.
In many cases, Pulse Transformers are built into communication connectors because they are miniaturizable components. However, when using a single Pulse Transformer that is not built into a communication connector, the Pulse Transformer should be placed near the communication connector on the board.
Pulse Transformers are roughly similar to transformers used to convert voltage. It has coils on the primary and secondary sides, and the primary and secondary coils are wound around a single ring-shaped iron core.
When the signal, or current, input to the Pulse Transformer flows through the primary coil, a magnetic field is generated in the iron core by electromagnetic induction. The magnetic field propagates through the iron core to the secondary side, causing electromagnetic induction in the secondary side and outputting current from the secondary side.
A transformer for transforming voltage generally has a 4-terminal configuration with a Vin and GND terminal on the primary side and a Vout and GND terminal on the secondary side, but in the case of Pulse Transformers, 4 or more terminals are often used. Communication involves both transmitting and receiving, and it is necessary to send signals from the primary side to the secondary side or from the secondary side to the primary side.
Since it is impossible to transmit both signals in a single transformer, some Pulse Transformers have a transmitter terminal and a receiver terminal. In practice, this configuration has a transformer for transmitting and a transformer for receiving within a single element.
Since Pulse Transformers are insulated at the signal input and output sides, when external noise gets on the communication signal sent from the output side, the Pulse Transformer intercepts the external noise and transmits only the signal necessary for communication to the input side. Pulse Transformers transmit pulse signals and, at the same time, protect the inside of electronic equipment by reducing the effects of static electricity and external noise.
If a communication circuit in an electronic device, malfunctions, and an abnormal voltage leaves the communication circuit, the Pulse Transformer also prevents the abnormal voltage from flowing into the destination communication device. The use of Pulse Transformers isolates the communication circuit of each electronic device, thus reducing the possibility of failure of other electronic devices in the event of a failure of one electronic device.
The disadvantage of using a Pulse Transformer is that, depending on the winding material and characteristics, distortion of the pulse signal waveform may result in poor signal quality or attenuation of the pulse signal waveform voltage. When using a Pulse Transformer, the actual pulse signal waveform should be observed with an oscilloscope or other measuring instrument, and the waveform should be evaluated to confirm that it is consistent with the communication specifications adopted by the electronic equipment and the electrical specifications of the communication IC to be used.
*Including some distributors, etc.
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Custom Coils, established in 1967 and based in Alcester, South Dakota, is a manufacturer of transformers, inductors, coils and other magnetic components. The company manufactures a range of products which include different types of transformers like power, step up/down, high voltage, ferrite, and trigger pulse transformers as well as DC igniters, high current inductors and antenna coils. These products find application in camera flash, Xenon lighting and flash tubes, motor clutches, biomedical and military targeting lasers. Additionally, the company also provides services such as reverse engineering, custom prototyping, custom winding, component assembly and transformer lamination.
Jefferson Electric, headquartered in Dyersburg, Tennessee, is a manufacturer and supplier of magnetic products specializing in dry-type low- and medium-voltage transformer solutions. The company’s product portfolio consists of dry-type low- and medium-voltage transformers, including ventilated, encapsulated, and industrial control transformers. Their product range also includes medium voltage transformers and accessories. The company also offers custom solutions with tailored and modified designs to meet the client’s specific requirements. With an ISO-backed quality system, Jefferson Electric serves various industries and applications across North America.
Amgis, LLC is a manufacturer of toroidal power transformers and inductors based in Texas, USA. The company's expertise lies in creating magnetic components that are efficient and technologically advanced. The company offers an extensive lineup of toroidal power transformers and inductors. Toroidal transformers are characterized by their donut-shaped core, which offers benefits such as reduced electromagnetic interference (EMI), compact size, and improved energy efficiency. Its products are essential components in various industries including electronics, renewable energy, and medical devices.
Agile Magnetics, a part of Standex International (SXI) company, is a manufacturer of custom-designed electromagnetics located in Concord, New Hampshire. Its portfolio comprises high-frequency power assemblies, custom coils, and 50-60-400Hz products. They offer free design consultations to discuss customers' magnetic needs. The company is ISO 9001 and AS 9100 compliant, and its products can be meticulously tailored to meet the criteria of UL, CUL, VDE, CE, UL, and CUL, complete with the markings when required.
AFP Transformers Corporation was founded in 1992 as a conglomerate of 3 other veteran companies and is headquartered in Edison, New Jersey. The company is a manufacturer of components used by mining, wastewater, semiconductors, public utilities, and other industries. The company’s products include specialty magnets, power quality products, and the company’s namesake, transformers. The company’s transformer lineup covers standard heating and furnace transformers to types of epoxy-cast transformers with both primary and secondary coils cast in a mold under a vacuum, embedding them in epoxy material to protect them from contaminates and damage during power surges.
Established in 1984, Manutech, Inc. is a US-based manufacturer specializing in precision industrial machinery. The company designs and produces advanced machinery and equipment for various industries. With a foundation dating back to its establishment, Manutech, Inc. engineers solutions. Their products range from automated assembly systems to specialized manufacturing equipment, serving industries like automotive, electronics, and aerospace. Manutech, Inc.'s devotion to excellence is evident in their machinery, tailored to enhance operational efficiency. Examples include robotic assembly systems for automotive production and precision manufacturing equipment for electronics.
Able Coil & Electronics Co., Inc., founded in 1969 and headquartered in Bolton, Connecticut, is a full-service manufacturer specializing in the design and production of electromagnetic components and coils. Some of their products include precision-wound coils, toroids, transformers, solenoids, as well as cables, connector harnesses, and many other electrical assemblies, which are found in various industrial applications such as security devices, process controls, bar code readers, RFID readers, subway systems. Their 20,000-square-foot manufacturing facility is fully equipped to handle high and low-volume production runs, providing support for prototypes, and short production runs with minimal lead times.
Lenco Electronics, Inc., Since 1973, is a manufacturer custom inductors and transformers such as PCB transformers, constant voltage, autotransformers, and custom transformers. The company also provides NEMA 1 enclosures with removable panels and knockout holes to make electrical connections simple. The McHenry, Illinois-based company services the power production and distribution, electronics, telecommunications, automotive, and electronics industries, and it is a member of the Transformer Association. The business's impregnation area is equipped with three walk-in ovens for the labor-intensive curing process as well as impregnation tanks for vacuum Epoxy and varnish.
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.
Stangenes Industries, Inc. started in 1974 and is headquartered in Palo Alto, California. The company is a manufacturer of magnetic cores and transformers used in the medical and research industries and various military applications. Customers include the United States Department of Energy as well as research facilities such as CERN and DESY in Europe and KEK in Japan. Transformers are the company’s primary product including pulse, isolation, current, and general transformers. The company also produces electromagnets, pulse modulators, power supplies, and magnetic cores.
Inglot Electronics Corp., established in 1964, and headquartered in Chicago, Illinois, is a manufacturer and supplier of miniature toroids and electromagnetic components. They design and produce electromagnetic components such as miniature toroids, switch-mode magnetics, high and low-frequency power chokes, and linear transformers used in power conversion equipment, covering the power conversion spectrum from surface mounts to large isolation transformers. Their services include design engineering, paper section layer winding, and prototype testing. Inglot Electronics Corp. holds ISO 9001 certification, and also provides data reporting and barcoding, upon request.
Endicott Coil Co, Inc. established in Binghamton, NY, in 1954 is a supplier of custom wound magnetic components to original equipment manufacturers (OEMs). Their product portfolio includes CNC Winding for Transformer and Toroid Cores, CNC Winding of a Self-Supported Copper Coil, Custom Coil Winding Assemblies, Encapsulating of Wound-Copper Coils and Overmolding of Wound-Copper Coils. The company serves the industries such as aerospace, military, and medical. he company also offers customer services that include technical support, and customized services.
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.
Founded in San Clemente, California in 1997, NetSource Technology, Inc. is an independent stocking distributor of electronic components and global procurement services, providing comprehensive supply chain solutions to OEMs and contract manufacturers worldwide. NetSource Technology serves the aerospace, automotive, IoT, medical, mobile device, and telecommunications industries and related companies. NetSource Technology specializes in locating hard-to-find, obsolete, end-of-life and highly allocated components with long lead times, supporting customers throughout the complete supply chain lifecycle.
Avnet, Inc. is an American distributor of electronic components and IT software originally founded in 1921 before its incorporation in 1961. Headquartered in Phoenix, Arizona, the company offers various electronic components including analog switches, microcontrollers, and circuit protectors, as well as IT solutions such as cloud computing and data analytics software. These are used by their clients in the automotive, transportation, security, and communication sectors. Avnet, Inc. operates in over 140 countries across North America, Asia, and Europe, and has several subsidiaries including Hackster.io, Dragon Innovation, and EBV Elektronik.
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.
Schaffner, founded in Luterbach, SO, in 1962 is a manufacturer of electromagnetic solutions that ensure the efficient operation of electronic systems. The company's product portfolio includes Active Harmonic Filters and Passive Harmonic Filters. Output Filters, Reactors and LCL Filters. 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.
Mauli Power System is a manufacturer and supplier in the power generation and distribution sector based in India. Established in 2004, the company offers a diverse array of transformers, catering to the evolving needs of modern power distribution systems. The company specializes in the production of various types of transformers, including pulse transformers, converter transformers, current transformers, control transformers, and more. These transformers play a pivotal role in the intricate network of power distribution, operating across a spectrum of capacities and voltage ranges.
Shivani Transformers, based in India, has been a manufacturer and supplier of transformers since 2005. The company produces a diverse range of transformers designed to meet various industrial and commercial needs. Its product lineup includes SMPS transformers, toroidal transformers, pulse transformers, custom-engineered transformers, high-frequency transformers, and more. These transformers are built with precision and attention to detail, ensuring optimal performance. One sample product is its SMPS (Switched-Mode Power Supply) transformer, an essential component in electronics and modern power supply systems. These transformers are crucial in efficiently converting electrical energy from one voltage to another, enabling the operation of various devices.
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).
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.
S.G. Smallwood Inc. (SGS) is a Canadian contract manufacturer specializing in custom transformers and related assemblies that was established in Kitchener, Ontario in 1945. The company offers a range of specialized capabilities, including design, engineering, precision linear winding, precision toroidal winding and layer winding services. These are utilized to produce transformers, windings, inductors, and assemblies according to customer specifications. SGS mainly serves clients in the power supply, consumer electronics, audio equipment, and telecommunications sectors.
Electronic Craftsmen is a Canadian custom manufacturer specializing in inductors and transformers that was originally founded in 1956 as E Craftsmen Corporation. From their 23,000 sq ft facility in Waterloo, Ontario, the company produces various custom magnetics including power, toroidal, and flyback transformers, common and differential mode chokes, and filter inductors. These are used by clients in the renewable energy, aviation, and industrial manufacturing sectors. Electronic Craftsmen has an onsite machine shop from which it provides additional services for customer projects, such as engineering, encapsulation, prototyping, and testing.
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.
YHDC, established in Beijing in 1992, is a manufacturer of electromagnetic components and devices. The company's products have found widespread use in various high-end industries that demand long-term stability. These sectors include IoT (Internet of Things), e-mobility, industrial equipment, precision instruments, aerospace, medical technology, and more. Its product range includes power transformers, current transformers, SCR Trigger transformers, and current sensors. The company's main production line spans an expansive area of 12,000 square meters, encompassing four distinct production workshops. The company holds the ISO9001:2000 quality system certification.
Exxelia was born in Paris, France in 2009 from the merger of five companies, the oldest of which was SIC-SAFCO, founded in France in 1921. The combined conglomerate is a manufacturer of electronic components to electronics manufacturers worldwide. The conglomerate’s entities are organized into 3 global business units: Capacitors, Magnetics, and Resistors & Subsystems. Capacitors are divided into basic materials such as aluminum electrolytic, ceramic, film, and tantalum. Magnetics are divided into functions with inductors, transformers, and rotors as subsections. Resistors & Subsystems are also divided by function and design with resistors, filters, position sensors, and mechanics & subassembly.
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.
Hybrid Electronics is a global distribution specialist of electronic components, with access to over 50 million unique components. Among the markets HE serves are the aerospace, automotive, communications, defense, industrial, medical, national security, and test & measurement industries. In addition to components, HE also provides quality and compliance testing, counterfeit detection, upscreening, and other forms of quality control. Examples of component subtypes that HE offers include ICs, batteries, capacitors, semiconductor products, sensors, circuit protection, interconnectors, filters, optoelectronics, relays, switches, power supplies, and cables and cable assemblies.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Custom Coils |
11.4%
|
| 2 | Mauli Power System |
8.0%
|
| 3 | Jefferson Electric Inc |
6.8%
|
| 4 | Amgis, LLC. |
6.8%
|
| 5 | Manutech, Inc. |
6.8%
|
| 6 | AFP Transformers Corp. |
6.8%
|
| 7 | West Coast Magnetics |
4.5%
|
| 8 | S.G. Smallwood Inc. |
4.5%
|
| 9 | Agile Magnetics |
3.4%
|
| 10 | Lenco Electronics, Inc. |
3.4%
|
Derivation Method
The ranking is calculated based on the click share within the pulse transformer 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
|
15 | 62.5% |
|
Switzerland
|
2 | 8.3% |
|
India
|
2 | 8.3% |
|
Canada
|
2 | 8.3% |
|
Germany
|
1 | 4.2% |
|
Australia
|
1 | 4.2% |
|
Japan
|
1 | 4.2% |
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