| 3LGlobal | | Manufacturer of electronic components such as inductors, coils, and other magnetics. |
| Aakash Electricials | | Maker of small power transformers, coils, and power transformers. From India |
| Ace Electronics | | Designer and manufacturer of high frequency and low frequency filter coils, power transformers, current transformers, chokes, tuning coils and electronic ballasts. Located in India. |
| AEM, Inc. | | Manufacturer of ferrite beads, ferrite inductors, ceramic inductors, and high-reliability fuses. |
| Agelec Industrie | | Manufacturer of custom single and multi-phase power transformers from 1 to 4000KVA; chokes to 10KA for more than 50 years. Also makes specialty test transformers and reactors. Located in Grenoble, France. |
| AM Transformers | | UK manufacturers and distributors of transformers and related products. |
| Amecon, Inc. | | Manufacturer of magnetic components including chokes and coils, inductors, cores, filters, relays, transformers and ballasts, current sensors and instrumentation products. |
| American Magnetics Corp. | | Designer and manufacturer of transformers, inductors, coils and related wound electromagnetic components 1 to 20KVA. |
| Anglia Transformers | | Manufacturers of transformers, chokes and inductors to customer specifications. From UK. |
| Anla Technology Co., Ltd. | | Manufacturer of surface mount wire wound EMC components, multilayer chip beads and inductors, SMD power inductors, line filter, choke coils, and SMT radial type coil. |
| Aqsa Stamping | | Manufacturer of transformer laminations: E&I, toroidal core. From India. |
| Audio Transformers Shinrock | | Manufacturer of audio transformers for tube amplifiers. Technical information and formulas for design and measurement. |
| Australian Tortech Transformers | | Global manufacturer and distributor of toroidal and conventional transformers, chokes and plug packs located in Sydney, Australia. |
| CEML, Lda | | Maker of ferrite, laminated and tororidal transformers. Located in Ovar, Portugal. |
| CET Technology | | Manufacturer of power, audio, and telecom transformers, inductors, chokes, toroids, linear and switching power supplies. |
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