Inductor Manufacturers

Last updated: January 2026

This directory lists 94 inductor manufacturers across the United States, from high-volume surface-mount device (SMD) producers to specialized custom wound magnetics houses.

Buyers leverage these suppliers to solve diverse challenges, ranging from achieving extremely low DC Resistance (DCR) in high-current power supplies to managing flux leakage in compact, sensitive designs. They also address the critical need for components with stable inductance tolerance and robust saturation current (Isat) performance across demanding temperature ranges, often for applications where board space is at a premium.

Supplier types in this sector vary significantly. Some specialize in standardized product lines, offering a broad catalog of common form factors and values, often ideal for general-purpose applications. Others are custom magnetics experts, excelling in unique winding geometries, specific core material formulations (e.g., high-permeability ferrites or powdered irons), or specialized packaging for extreme environments, serving niche markets like aerospace or medical.

To engage effectively, buyers should prepare detailed specifications including required inductance, maximum current (both RMS and peak saturation current), operating frequency range, desired Q factor, and acceptable DC Resistance. Suppliers will expect clear environmental and mechanical requirements, anticipated annual volumes, and any specific testing protocols or regulatory compliance needs, such as AEC-Q200 for automotive.

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Company Directory

94 companies nationwide

Abracon

abracon.com
Spicewood, TX

Abracon manufactures a wide range of high-frequency and compact RF inductor solutions. The company provides power, timing, and RF components for critical applications. Serving diverse markets including automotive, industrial, and consumer electronics, Abracon develops and delivers reliable electronic components.

abinfo@abracon.com+15123716159

AEM Components

aemcomponents.com
San Diego, CA

Based in San Diego, CA, AEM Components manufactures a complete line of electronic components. They specialize in chip inductors, multilayer ceramic inductors, and various ferrite beads for high power and high frequency applications, including EMI signal filtering. The company also produces automotive-grade fuses.

sales@aemcomponents.com+18587506100

Inductor Supply Inc.

americandistr.com
Randolph, NJ

Based in Randolph, NJ, Inductor Supply Inc. specializes in the design, manufacture, and supply of inductors. They also produce a range of other magnetic components including coils, chokes, and transformers for various applications.

adisales@americandistr.com+19733281181

Amgis Toroids

amgistoroids.com
Houston, TX

Based in Houston, TX, Amgis Toroids manufactures custom high frequency inductors, designed to client specifications for inductance, current capacity, and frequencies up to 1 MHz. They also produce toroidal, medical isolation, and auto transformers. The company serves medical, industrial, and telecommunications sectors.

sales@amgistoroids.com+18327751319

Badger Magnetics

badgermagnetics.com
Milwaukee, WI

Badger Magnetics, based in Milwaukee, WI, custom designs and manufactures AC and DC choke inductors, alongside electromagnetic coils and power transformers. Serving commercial, medical, industrial, and military (Mil Spec) sectors, they offer custom products and production capabilities for diverse application requirements and volumes.

fnyrf.za@onqtrezntargvpf.pbz+14143624441

Bourns, Inc.

bourns.com
San Antonio, TX

Based in San Antonio, TX, Bourns, Inc. manufactures quality power inductors primarily for the automotive market. They provide innovative and reliable electronic solutions, addressing complex challenges across various industries. Bourns is committed to engineering excellence and global customer support for smarter design.

americus@bourns.com+19517815500

Buckeye Electrical

buckeyeelectrical.com
Botkins, OH

Based in Botkins, OH, Buckeye Electrical offers over 25 years of experience in coil winding, essential for inductors and transformers. This family-owned company also provides wire harnesses, cable assemblies, and custom assemblies. They serve a wide variety of industries including industrial, military, medical, and municipal sectors.

mail@buckeyeelectrical.com+19376937519

Cal Coil Technologies, Inc.

calcoiltechnologies.com
South El Monte, CA

Based in South El Monte, CA, Cal Coil Technologies, Inc. specializes in transformer coil winding and rewinding services. They also provide a full range of solutions to renew defective transformers, focusing on custom requirements for various industrial applications.

pgonzalez@calcoiltechnologies.com+16264941488

Captor Corporation

captorcorp.com
Tipp City, OH

Based in Tipp City, OH, Captor Corporation specializes in build-to-print and custom manufacturing of inductors and coils. They offer production of both manual and automated inductors, providing tailored solutions for various industrial applications requiring high-quality coil and inductor components.

sales@captorcorp.com+19376678484

Custom Coils, Inc.

ccoils.com
Benicia, CA

Based in Benicia, CA, Custom Coils, Inc. specializes in the design, engineering, and manufacturing of custom and specialty coils, including inductors and chokes. They provide high-performance solutions for high-power and thermal applications, serving industries such as medical imaging and semiconductor equipment.

info@ccoils.com+17077528633

CWS Coil Winding Specialist

coilws.com
Orange, CA

CWS Coil Winding Specialist, based in Orange, CA, designs and manufactures custom inductors, transformers, chokes, and magnetic coils. They offer custom winding and design services, alongside off-the-shelf standard power magnetic products. Capabilities include surface mount, self-supported, and through-hole inductors, all RoHS compliant and lead-free.

sales@coilws.com+18003773244

Control Transformer, Inc.

control-transformer.com
Cortland, OH

Based in Cortland, OH, Control Transformer, Inc. designs and manufactures custom inductors, transformers, reactors, and chokes. With over 70 years of experience, they provide engineered-to-order magnetic solutions for complex applications in demanding markets like aviation, electric vehicles, and renewable energy.

sales@control-transformer.com+13306376015

Cramer Magnetics

cramercoil.com
—

Cramer Magnetics designs and manufactures high-frequency wound and planar magnetic solutions for switching mode power supply applications. They provide custom magnetic devices with quick turnarounds, serving industrial, power telecom, medical, and automotive markets. The company operates a US factory, offering repeatable and cost-effective solutions.

techsales@cramerco.com+14147324031

Custom Coils

customcoils.com
Alcester, SD

Based in Alcester, SD, Custom Coils designs and manufactures high current inductors, custom transformers, and other specialty magnetic components. They deliver custom-built solutions to client specifications. With US-based production since 1967, the company is ISO 9001 certified and utilizes dependable manufacturing techniques.

sales@customcoils.com+16059342460

Custom Magnetics, Inc.

custommag.com
North Manchester, IN

Custom Magnetics, Inc. an ISO 9001:2015 and ITAR-certified manufacturer based in North Manchester, IN, designs and produces custom transformers and coils. Founded in 1974, they serve electrical/electronics industries, offering various transformer types, alongside custom inductors and chokes built to exact specifications.

sales@custommag.com+12609828508

Datatronics, Inc.

datatronics.com
Menifee, CA

Based in Menifee, CA, Datatronics, Inc. designs and manufactures custom magnetic components, including power inductors. With over six decades of experience, they provide rapid prototyping, qualification testing, and high-volume production for demanding military, medical, industrial, and space applications.

sales@datatronics.com+19519287700

DDC

ddc-web.com
—

DDC designs and builds high-performance power inductors and magnetic solutions for demanding applications. Specializing in components that meet MIL-PRF-27 and MIL-STD-981, the company serves military, aerospace, and space sectors, including fighter jets, transport aircraft, and satellites.

service@ddc-web.com+16315675600

Delevan

delevan.com
East Aurora, NY

Based in East Aurora, NY, Delevan is a specialty manufacturer providing coil winding and resolver technologies. The company specializes in producing high-reliability inductor products for various industrial applications, leveraging expertise in electromagnetic components.

delevan.sales@regalrexnord.com+17166523600

Endicott Coil Company, Inc.

endicottcoil.com
Binghamton, NY

Endicott Coil Company, Inc. designs and manufactures custom transformers, inductors, and wound copper coils. With over 70 years of experience, the company offers custom coil winding, encapsulation, and assembly processes. They serve OEMs across industrial, medical, and aerospace/defense sectors, providing high-quality magnetic components.

info@endicottcoil.com+18002244477

Ferroxcube

ferroxcube.com
East Rochester, NY

Based in East Rochester, NY, Ferroxcube is a manufacturer specializing in ferrite materials and components. The company leverages its manufacturing capabilities to produce a range of products, including multilayer inductors, ferrite beads, and various core types for diverse electronic applications.

saleseurope@ferroxcube.com+13798721791

General Transformer Corp.

generaltransformer.com
Wylie, TX

Based in Wylie, TX, General Transformer Corp. designs and manufactures custom inductors and transformers. They create components with toroid or laminated steel cores, serving OEM customers across various power circuit applications. The company offers custom designs from prototype to production, ensuring cost-effective and efficient solutions.

info@generaltransformer.com+19724421285

Gowanda Electronics

gowanda.com
—

Gowanda Electronics is a vertically integrated, U.S.-based manufacturer of high-quality electronic components. The company designs, engineers, and produces reliable inductors, including conical, chip, and ceramic core types, for demanding broadband, power, and RF applications. They serve aerospace, defense, medical, rail, and industrial sectors from prototype to production.

sales@gowanda.com+17165322234

HALO Electronics, Inc.

haloelectronics.com
Santa Clara, CA

Based in Santa Clara, CA, HALO Electronics, Inc. manufactures a full line of inductors, including drum cores, shielded drum cores, and molded inductors. They cater to both standard and non-standard inductance values or package sizes. The company also provides integrated RJ45 connectors, DC/DC transformers, and telecom protection solutions.

info@haloelectronics.com+16509033800

Hill Tech

hill-tech.com
Palatine, IL

Based in Palatine, IL, Hill Tech specializes in manufacturing high frequency toroidal inductors and toroidal chokes. They provide an extensive range of products, with standard lines offering diverse sizes, inductance, and current capabilities for various applications.

sales@hilltech.com+18472554400

Houston Transformer Company, LTD.

houstontransformer.com
—

Houston Transformer Company, LTD. designs and manufactures custom transformers, inductors, chokes, and related magnetic devices. They build unique inductor devices up to 1000 AMPs using various product configurations, with a strong focus on high standards and customer satisfaction.

info@houstontransformer.com+17139776009

Industrial Coils LLC

indcoils.com
—

Industrial Coils LLC manufactures custom solenoid coils, electric coils, chokes, and small transformers to customer specifications. With over 50 years of experience, the company provides prototype through high-volume production for taped wrapped, molded, and PCB components, offering various assembly services.

info@indcoils.com+19566649496

Inductive Technologies, Inc.

inductech.com
Clearwater, FL

Inductive Technologies, Inc. (I-Tech) manufactures custom high-frequency magnetic components, including a wide array of inductors such as variable, toroidal, power, buck, and differential mode types. With engineering and prototyping capabilities in Clearwater, FL, they specialize in board-level components and custom magnetics like common mode chokes and air coils.

inductivetechnologies@electrotechnik.com+17275324459

Induction Tooling

inductiontooling.com
—

Induction Tooling specializes in manufacturing inductors tailored for the automotive, aerospace, medical, agricultural, and general metal industries. The company also supplies bus bars and quick-connect solutions for various industrial applications.

sales@inductiontooling.com+14402370711

Inductors Inc.

inductor.com
Anaheim, CA

Based in Anaheim, CA, Inductors Inc. specializes in providing high-quality inductor components specifically tailored for the medical devices and equipment industry. They assist clients in selecting the optimal product solutions for their particular applications, focusing on custom requirements for specialized medical electronics.

sales@inductor.com+19496232460

Inductor Supply, Inc.

inductorsupply.com
Garden Grove, CA

Based in Garden Grove, CA, Inductor Supply, Inc. specializes in the design, manufacture, and supply of inductors, coils, chokes, transformers, and magnetic components. They offer standard surface mount and through-hole products, plus custom solutions for the electronics community using global resources.

isisales@inductorsupply.com+18008541881

Alpha 1 Induction Service Center

inductothermgroup.com
—

This company specializes in the manufacturing and repair of various induction components. They produce induction coils, essential for diverse industrial heating applications, along with transformers, water-cooled cables, billet elevators, and rotary bars, serving a range of industrial needs.

emsco-oh@emsco.com+16092679000

Johnson Electric Coil Company

johnsoncoil.com
Antigo, WI

Based in Antigo, WI, Johnson Electric Coil Company offers comprehensive design, engineering, and manufacturing of magnetic components. They specialize in producing single-phase and three-phase inductors and chokes, providing custom solutions for diverse industrial applications.

quote@johnsoncoil.com+18008269741

Kentzy

kentzy.com
Allen, TX

Based in Allen, TX, Kentzy specializes in designing and manufacturing customized magnetic components, including high-quality inductors, solenoids, and transformers. The company provides precision-engineered crossover coils and EMC components, serving industrial and commercial clients with tailored solutions for electronic systems.

sales@kentzy.com+19728826288

Laird

laird.com
—

Laird manufactures a variety of inductors, including multilayer power inductors, wire-wound surface mount inductors, and molded surface mount inductors. These components are designed for use in both power and signal line applications across different industries.

laird.eu-sales@dupont.com+15527141166

L/C Magnetics Inc

lcmagnetics.com
Anaheim, CA

L/C Magnetics Inc, based in Anaheim, CA, manufactures custom designed inductors for various applications. They specialize in high-frequency, gapped, multi-tap, variable, and high current inductors. The company utilizes ferrite, powder, Metglas, and amorphous cores to meet specific customer magnetic component requirements.

quote@lcmagnetics.com+17146244740

Lenco Electronics, Inc.

lenco-elect.com
Mchenry, IL

Based in McHenry, IL, Lenco Electronics, Inc. specializes in custom inductor manufacturing since 1973. They produce diverse types, including DC filter, AC line, current limiting, and switch mode models. Utilizing various core materials and conductors, Lenco offers design and manufacturing support from prototype through high-volume production.

sales@lenco-elect.com+18153442900

Magneforce Inc.

magneforce.com
Warren, OH

Based in Warren, OH, Magneforce Inc. specializes in the in-house design and fabrication of custom induction heating coils and complete heating systems. They offer precise coil development, testing, and guarantee heating processes for diverse industrial applications. The company utilizes CNC and additive manufacturing for specialized process fixtures.

sales@magneforce.com+13308569300

Magnetic Circuit Elements Inc.

mcemagnetics.com
Salinas, CA

Based in Salinas, CA, Magnetic Circuit Elements Inc. designs and manufactures miniature transformers, inductors, and chokes. Since 1957, they provide reliable magnetic components for medical, defense, aerospace, and industrial sectors, specializing in custom or standard parts with precision winding and adjustable inductance.

sales@mcemagnetics.com+18317578752

MCI Coils

mcicoils.com
—

Based in Dracut, MA, MCI Coils manufactures miniature electronic air core inductors. The company specializes in producing custom inductors for a wide range of radio frequency and microwave applications, serving industrial and commercial B2B customers.

sales@mcicoils.com+19784536016

MCI Transformer Corporation

mcitransformer.com
Babylon, NY

MCI Transformer Corporation manufactures custom magnetics and transformers for critical medical and dental industry equipment. Based in Babylon, NY, the company provides specialized electromagnetic components tailored for diverse industrial applications, serving B2B customers with their own production facilities.

sales@mcitransformer.com+16315870510

Meritek USA

meritekusa.com
Baldwin Park, CA

Based in Baldwin Park, CA, Meritek USA produces inductors, advanced circuit protection devices, and other passive components for the electronics manufacturing industry. They provide solutions for IoT, industrial controls, automotive, and power supply applications, supporting ultra-small SMD components and custom designs.

sales@meritekusa.com+18003674835

Micrometals, Inc.

micrometals.com
Anaheim, CA

Based in Anaheim, CA, Micrometals, Inc. manufactures high-quality magnetic inductor cores in various shapes and materials, including Toroid, E Core, Sendust, and Molypermalloy. They also provide proprietary Inductor Designer and Analyzer software, assisting engineers in optimizing discrete inductor designs with their comprehensive core solutions.

sales@micrometals.com+17149709400

Mil Spec Magnetics

milspecmag.com
Pomona, CA

Based in Pomona, CA, Mil Spec Magnetics is a US manufacturer with over 28 years of experience. The company specializes in producing high-quality Made In USA transformers, inductors, capacitors, and filters for various industrial and commercial applications.

tony@milspecmag.com+19095988116

MiniRF

minirf.com
Fremont, CA

MiniRF specializes in realizing custom air core wire wound inductor designs, solving various application challenges. Based in Fremont, CA, the company also provides surface mount RF transformers, couplers, and splitters. They offer comprehensive EMS services, including PCB design and fabrication, catering to broadband, wireless, and communication systems.

sales@minirf.com+14082283533

MPS Industries, Inc.

mpsind.com
Gardena, CA

Based in Gardena, CA, MPS Industries, Inc. designs and manufactures custom inductors for an optimal balance of performance, size, weight, and cost. The company provides custom transformers, common mode chokes, and reverse engineering services. They specialize in quality engineered magnetic components for demanding applications, including aviation.

sales@mpsind.com+13103251043

National Electric Coil

national-electric-coil.com
Brownsville, TX

Based in Brownsville, TX, National Electric Coil specializes in manufacturing various types of coils, including those for generators. The company's Brownsville facility is noted as one of the largest manufacturing sites of its kind, producing diverse coil solutions for industrial applications.

necservice@national-electric-coil.com+17247874967

Norlake Manufacturing Company

norlakemfg.com
North Ridgeville, OH

Based in North Ridgeville, OH, Norlake Manufacturing Company is a magnetics manufacturer with over 50 years of experience. They provide engineered and custom transformer solutions from a full-service custom magnetics facility, specializing in design, prototypes, and production runs for various specifications.

magnetics@norlakemfg.com+14403533200

NWL, Inc.

nwl.com
Akron, OH

Based in Akron, OH, NWL, Inc. designs and manufactures Mil-Spec inductors and transformers. Serving industrial applications, they specialize in power supplies, including those for electrostatic precipitators. With over 30 years of experience, NWL provides custom design and manufacturing of high-performance power technology.

tfarmer@nwl.com+16092987300

Osborne Transformer Corporation

osbornetransformer.com
Fraser, MI

Based in Fraser, MI, Osborne Transformer Corporation specializes in the design and production of premium quality electromagnetic components. The company provides superior custom variable inductors and transformers, optimizing every characteristic for specific applications. Osborne serves leading laboratories and mission-critical applications.

sales@osbornetransformer.com+18002299410

Passive Plus

passiveplus.com
—

Passive Plus manufactures high-performance RF/Microwave passive components, specializing in spiral and broadband conical inductors, capacitors, and resistors. Serving industries like medical, semiconductor, military, broadcast, and telecommunications, they also offer custom thin film design work. The company emphasizes responsive support and expeditious delivery times for its clientele.

sales@passiveplus.com+16314250938

Pico Electronics

picoelectronics.com
Pelham, NY

Pico Electronics develops and crafts miniature and ultra-miniature inductors, transformers, and power supplies. The company specializes in compact, reliable electronic components for commercial flight, aerospace, and military operations. They offer high power units and high voltage solutions, with diverse inductance values.

info@picoelectronics.com+18004311064

Piconics Inc.

piconics.com
—

Based in Tyngsboro, MA, Piconics Inc. specializes in manufacturing high-quality micro-electronic inductors. Their product line includes broadband conical inductors, RF & microwave air coils, fixed inductors, tunable inductors, and spiral inductors. They primarily serve mission-critical commercial, defense, aerospace, and space applications.

sales@piconics.com+19786497501

Control Transformer Inc.

pkoh.com
Cleveland, OH

Control Transformer Inc. (CTI), based in Cleveland, OH, specializes in the custom engineering and manufacturing of industrial electrical components. The company produces custom transformers, reactors (inductors), chokes, and enclosures. CTI serves a wide array of diverse industries with its specialized electrical solutions and products, focusing on tailored designs.

careers@pkoh.com+14409472000

Premier Magnetics

premiermag.com
Lake Forest, CA

Premier Magnetics specializes in magnetics design and manufacturing, providing customized magnetic components and PCB assemblies. With over 30 years of experience, the company serves a range of industries including lighting, avionics, medical, military, and Pro AV. They offer engineered solutions for various applications.

contactus@premiermag.com+19494520511

Prem Magnetics

premmagnetics.com
Johnsburg, IL

Prem Magnetics is a manufacturer of custom electrical transformers, inductors, and coils. Operating with its own facilities in the USA, the company specializes in crafting magnetic components designed for various power electronics applications. They provide robust solutions for industrial and commercial B2B clients.

sales@premmag.com+18153852700

Renco Electronics

rencousa.com
Rockledge, FL

Renco Electronics is a US-based manufacturer specializing in inductor products, including a diverse offering of Common Mode Chokes. The company provides design and manufacturing expertise for various end markets, including consumer and industrial products, and maintains ISO 9001 certification.

accounting@rencousa.com+13216371000

Robert M. Hadley Company, Inc.

rmhco.com
Ventura, CA

Based in Ventura, CA, Robert M. Hadley Company, Inc. designs and manufactures high-quality custom electronic transformers, inductors, reactors, and coils. Serving original equipment manufacturers (OEMs) and the Aerospace and Defense industries since 1929, this family-owned business provides durable magnetics meeting stringent design and scheduling requirements.

info@rmhco.com+18056587286

Lenco Electronics

rwpes.com
Alameda, CA

Based in Alameda, CA, Lenco Electronics is an UL-certified manufacturer specializing in custom transformers and inductors. They provide precision-designed magnetic components tailored for critical applications across the medical, industrial, and automotive sectors, ensuring high-quality solutions for their clients.

sales@rwpes.com+17145240454

Sag Harbor Industries, Inc.

sagharborind.com
Sag Harbor, NY

Sag Harbor Industries, Inc. based in Sag Harbor, NY, is a 100% Made in USA manufacturer specializing in custom electrical coils, inductors, and solenoid coils. Operating multiple US facilities, the company offers high to short-run production volumes, focusing on quality, rapid turnaround, and manufacturing flexibility for diverse industrial applications.

info@sagharborind.com+18007245952

Schott Magnetics

schottmagnetics.com
—

Schott Magnetics designs and manufactures custom inductors, transformers, and magnetic components. Since 1951, they provide high-quality, custom-engineered solutions for high-mix, low-volume applications, serving industrial, telecommunications, energy, aerospace/defense, and medical sectors from US facilities.

sales@schottmagnetics.com+16196617510

SemiGen

semigen.net
San Jose, CA

Based in San Jose, CA, SemiGen manufactures planar chip inductors using polished quartz or alumina substrates, ensuring high dimensional uniformity. As an end-to-end manufacturing partner, the company provides expertise and capacity to bolster product supply chains. SemiGen helps bring products to life from material to materialization.

sales@rfmw.com+16036248311

Sigma Electronics, Inc.

sigmaxfmr.com
Houston, TX

Based in Houston, TX, Sigma Electronics, Inc. designs and manufactures custom transformers, inductors, chokes, and wire-wound magnetic components. They specialize in components for rugged and extreme environment applications, offering fast-track sampling and value-added assemblies with over 50 years of experience.

sales@sigmaxfmr.com+12819334700

Spang Engineered Solutions

spangengineeredsolutions.com
—

Spang Engineered Solutions designs, prototypes, tests, and manufactures custom inductors, transformers, and assemblies. Specializing in various inductor types including large chokes, common mode, DC, differential, filter, and flyback, they offer tailored solutions. The company serves diverse sectors such as Electric Vehicles, Aerospace & Defense, Transportation, and Medical Devices.

spangengsol@spang.com+14129639363

Stangenes Industries Inc.

stangenes.com
Palo Alto, CA

Based in Palo Alto, CA, Stangenes Industries manufactures custom charging variable inductors for line type modulator applications. They also specialize in high voltage systems and electromagnetic components, including pulse transformers, electromagnets, pulse modulators, and power supplies, for demanding industrial use.

info@stangenes.com+16504930814

Triad Magnetics

triadmagnetics.com
Perris, CA

Triad Magnetics specializes in custom inductor manufacturing services, providing a broad range of innovative solutions. Their offerings include DC inductors and AC line inductors. Based in Perris, CA, the company serves various industries with its specialized magnetic component solutions.

info@triadmagnetics.com+19512770757

Vanguard Electronics

ve1.com
Huntington Beach, CA

Based in Huntington Beach, CA, Vanguard Electronics manufactures high-reliability inductors and transformers. They specialize in RF & microwave air cores, chip inductors, and power magnetics, offering custom solutions for medical, space, and military applications up to 3 GHz+.

sales@ve1.com+17148423330

West Coast Magnetics

wcmagnetics.com
Stockton, CA

Based in Stockton, CA, West Coast Magnetics specializes in the design and manufacturing of custom and popular inductor designs. The company provides comprehensive inductor solutions for various applications.

sales@wcmagnetics.com+18006281123

Winatic Corp.

winatic.com
Clearwater, FL

Based in Clearwater, FL, Winatic Corp. designs and manufactures high-quality custom inductors, chokes, coils, and transformers. Specializing in magnetics for medical, dental, and patient care applications, they offer highly reliable components. Winatic operates with an ISO 9001:2015 Quality Management System.

winatic@electrotechnik.com+17275388917

Exxelia

exxelia.com
San Antonio, TX

Exxelia specializes in manufacturing power components, including advanced ferrite core assemblies that can be overmolded. Their technology is designed to meet demanding electrical, thermal, environmental, and mechanical requirements for various industrial applications. The company provides critical components from its facility.

vous@exemple.com

GCi Technologies

gcitechnologies.com
—

GCi Technologies specializes in manufacturing power inductors and planar transformers. The company also provides inductor design services, holding ISO/TS16949:2009 certification for its manufacturing operations.

gci@gcitechnologies.com

Kintronic Labs

kintronic.com
Bluff City, TN

Based in Bluff City, TN, Kintronic Labs designs and manufactures custom isolation and RF inductors. They specialize in providing reliable broadcast and telecommunication solutions, including components for AM antenna systems. Their RF engineers develop innovative inductor technologies for various applications.

ktl@kintronic.com

Venkel Ltd.

venkel.com
Austin, TX

Based in Austin, TX, Venkel Ltd. manufactures high-quality surface mount inductors, including versatile wirewound RF, power, and chip inductors. With over 35 years of experience, it provides comprehensive solutions for diverse circuit designs, offering design kits and samples.

sales@venkel.com

Vishay

vishay.com
San Antonio, TX

Based in San Antonio, TX, Vishay manufactures a comprehensive range of inductors for various industrial applications. Their product portfolio features the low-profile IHLP® power inductor family, specifically designed for compact and space-constrained environments, demonstrating their expertise in advanced inductor solutions.

tantalum@vishay.com

Allied Components International

alliedcomponents.com
Foothill Ranch, CA

Based in Foothill Ranch, CA, Allied Components International engineers and manufactures custom inductors to meet specific client requirements. The company also specializes in designing and producing custom transformers. Additionally, they distribute circuit protection devices, serving industrial and commercial B2B customers.

+18002953800

Ascend Electronics

ascendelec.com
—

Ascend Electronics is a U.S. manufacturer and global supplier of industrial transformers, inductors, instrumentations, embedded systems, and electronic components. Specializing in American-made products with an extended lifespan and superior technology, the company handles both low and large-quantity orders. They provide flexible, results-driven services to industrial clients globally.

+13022002010

Assembly Masters, Inc.

assemblymasters.com
Elkhart, IN

Based in Elkhart, IN, Assembly Masters manufactures quality toroidal inductors, pot cores, and common-mode chokes. They also specialize in custom wire harnesses and cable assemblies for diverse industries including industrial, transportation, power transmission, and electronics. The company offers both low and high-volume production with a commitment to industry standards.

+15742939026

Coilcraft

coilcraft.com
Cary, IL

Based in Cary, IL, Coilcraft specializes in the design and manufacture of wirewound RF and microwave frequency inductors. The company provides custom and standard inductor solutions for a range of demanding applications across the commercial, industrial, automotive, and military industries.

+18003222645

Custom Magnetics

customco.com
Pomona, CA

Based in Pomona, CA, Custom Magnetics specializes in manufacturing custom specialty power transformers. The company provides reliable and functional magnetic solutions for critical applications, serving various industrial and commercial needs.

+17083388888

Dayton Audio

daytonaudio.com
Springboro, OH

Based in Springboro, OH, Dayton Audio manufactures air core inductor crossover coils and other audio components for loudspeaker testing and crossovers. The company also designs and produces high-performance consumer audio products, such as Bluetooth speakers, known for superior sound output and extended playtimes.

+19377438248

Electric Power Systems

electricpowersystemsintl.com
Youngsville, NC

Based in Youngsville, NC, Electric Power Systems designs and manufactures durable inductors for commercial and industrial use. They specialize in custom power equipment built to specifications, offering prototyping and assembly services. The company also provides repair for electrical components like transformers, switchgear, and motor controls.

+19195564703

Electronetics

electronetics.us
Perris, CA

Based in Perris, CA, Electronetics specializes in custom inductor solutions and innovative magnetic components, including transformers and converters. A division of Triad Magnetics, the company provides prototype to high-volume production for medical, aerospace, audio, and industrial applications.

+19513854124

Emicon Corporation

emiconcorp.com
El Paso, TX

Based in El Paso, TX, Emicon Corporation specializes in manufacturing custom wound coils, including inductors, antennas, RFID antennas, air wound coils, and toroidal coils. The company also supplies Tempest EMI/RFI/Data filters, digital filters, low pass filters, and high attenuation power entry modules.

+19158575128

HBR Industries Inc

hbrindustries.com
San Jose, CA

HBR Industries Inc. based in San Jose, CA, specializes in providing complete turnkey solutions for custom wound coil product prototypes and low-volume production runs. The company offers copper coil winding and custom tube bending services, catering to projects requiring precision coil manufacturing.

+18779283516

Integrated Magnetics

intemag.com
Culver City, CA

Based in Culver City, CA, Integrated Magnetics specializes in advanced magnetics, offering custom permanent magnets, precision magnetic assemblies, and custom electrical machines. With 60+ years of expertise, they provide design-to-specification and build-to-print solutions, including precision coil winding, for aerospace, medical, and defense industries.

+18004216692

Johanson Technology

johansontechnology.com
Camarillo, CA

Based in Camarillo, CA, Johanson Technology manufactures high-performance RF wirewound inductors. These components are specifically designed for broadband and high-power radio frequency applications, providing high current handling and low DC resistance. The company serves various industrial and commercial sectors with its advanced passive electronic components.

+18053891166

Kamaya, Incorporated

kamaya.com
Fort Wayne, IN

Kamaya, Incorporated, based in Fort Wayne, IN, manufactures high-precision inductors and a broad range of other passive electronic components like RF devices, resistors, and capacitors. The company supplies essential components for diverse industries, including automotive, mobile devices, and various industrial electronic equipment.

+12604891533

Nova Magnetics, Inc.

novamagnetics.net
Garland, TX

Based in Garland, TX, Nova Magnetics, Inc. designs and manufactures custom transformers and inductors utilizing wound magnetics technology. They provide engineering, prototype development, and testing for specialty components, focusing on small volume/large physical size products. The company serves diverse sectors including medical, defense/aerospace, and renewable energy.

+19722728287

PCA Electronics Inc.

pca.com
North Hills, CA

PCA Electronics Inc. based in North Hills, CA, specializes in custom magnetics products and services for various applications. They serve industries such as aerospace, medical, consumer, commercial, industrial, and automotive. The company maintains ISO9001:2015 certifications across all its global sales and manufacturing facilities.

+18188920761

Quantic ECI

quanticeci.com
—

Based in Westfield, MA, Quantic ECI manufactures custom inductors and passive magnetic components. Offerings include air coils, common mode EMI filters, current sensors, and RF inductors for mission-critical power applications. They serve aerospace, defense, industrial, and medical markets, holding AS9100 certification.

+14245877501

Standex Edge

standexedge.com
Fairfield, OH

Standex Edge, based in Fairfield, OH, designs and manufactures precision-engineered custom magnetics. They specialize in power magnetics solutions, including inductors, chokes, and planar transformers. Their custom-made components serve demanding applications across automotive, aerospace, industrial, and energy systems, focusing on performance and reliability.

+18667826339

Standex Electronics

standexelectronics.com
Fairfield, OH

Based in Fairfield, OH, Standex Electronics specializes in precision-engineered custom magnetics, including inductors, chokes, and planar transformers. They deliver engineered solutions for demanding applications, collaborating with customers on manufacturable designs. The company serves the automotive, aerospace, industrial, and energy sectors.

+18667826339

US Cotronics

uscotronics.com
Fairbury, IL

Based in Fairbury, IL, US Cotronics is an ISO 9001:2015-certified, family-owned manufacturer specializing in electromagnetic coil windings and custom electromechanical assembly solutions. They produce choke inductance coils for various commercial and industrial applications, alongside precision wire cutting and lead wire assemblies.

+18156923416

Delta Americas

delta-americas.com
Fremont, CA

Based in Fremont, CA, Delta Americas, through its Cyntec division, specializes in manufacturing magnetic components including chip inductors, power inductors, and common mode chokes. These components serve critical applications in portable devices, cloud computing, automotive, and IoT market segments. The company provides advanced power and thermal management solutions for industrial B2B customers.

No contact on file

Knowles Electronics, LLC

knowles.com
Itasca, IL

Based in Itasca, IL, Knowles Electronics, LLC manufactures high-performance inductors for demanding applications. They offer High Q Ceramic Core Inductors and Air Core Inductors, engineered for minimal signal loss and high reliability. The company primarily serves the medtech, defense, industrial, and mission-critical RF markets.

No contact on file

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How to Choose a Company

  • Verify their in-house testing capabilities for critical parameters. Ensure they have equipment to accurately measure Self-Resonant Frequency (SRF), Q factor, and saturation current (Isat) across your specified operating temperature range, rather than relying solely on theoretical models or typical datasheet values.
  • For designs intended for harsh environments like automotive or industrial applications, insist on manufacturers holding AEC-Q200 qualification and IATF 16949 certification. These demonstrate a commitment to robust design, manufacturing process control, and reliability beyond standard commercial-grade components.
  • A significant red flag is a manufacturer unwilling or unable to discuss their core material selection rationale for your specific application. The choice between ferrites, powdered iron, or even air core significantly impacts permeability, saturation characteristics, and frequency response, and a good supplier will guide you through this.
  • Assess their experience with specialized winding techniques and wire types, such as Litz wire, if your design operates at high frequencies. Inadequate attention to skin effect and proximity effect can lead to drastically higher AC losses and reduced efficiency in power applications.

Frequently Asked Questions

What data do inductor manufacturers typically need for a precise quote on custom magnetics?

Beyond basic inductance and current, expect to provide the operating frequency range, required Q factor, acceptable DC Resistance (DCR), and target saturation current (Isat). Critical details also include physical dimensions, mounting preferences (e.g., SMD, through-hole), environmental conditions (temperature range, humidity, shock/vibration), and any specific material certifications or regulatory compliance (like RoHS, REACH, or AEC-Q200). Providing a detailed schematic and PCB layout for context is always beneficial.

How does core material selection impact inductor performance, especially regarding Self-Resonant Frequency (SRF) and saturation?

Core material is paramount. Ferrite cores, for instance, offer high permeability for compact designs but can saturate abruptly and have varying loss characteristics at different frequencies. Powdered iron cores typically have a softer saturation curve, making them more robust against current spikes, but generally lower permeability. Air cores offer excellent linearity and high SRF but at the cost of much larger size for a given inductance. The material's magnetic properties directly influence the inductor's Q factor, distributed capacitance, and ultimately its usable frequency range before SRF becomes a limiting factor.

When should I consider a custom inductor design versus an off-the-shelf component?

Off-the-shelf inductors are suitable for many general-purpose applications where standard values, dimensions, and performance characteristics meet requirements. However, a custom design becomes necessary when dealing with unique form factor constraints, extremely high-frequency operation demanding a specific Q factor and SRF, very high current requirements necessitating specific core materials and winding techniques to prevent saturation, or stringent thermal management. While more costly initially, custom inductors often optimize performance, efficiency, and size for highly specialized or high-volume applications, making them more cost-effective in the long run.

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