Passives
| AVX | Aerovox | Alpha Wire | Allen Bradley |
| Apem | Bel Fuse | Beldon Wire and Cable | Betatronix |
| Bourns | C and K Switches | CTS Corp | Centech USA |
| Clarostat | Coilcraft | Cole Instrument Corp | Crydom |
| Cornell Dubilier | Delcon Capacitors | Deltrol Corp | Eao |
| Eaton Switches | Elma | ETA | Evox Rifa |
| Filtran | Fusetek | Grayhill | Hycomp |
| Interpoint | Isotemp | Isotek | Kemet |
| Kilovac | Littlefuse | Mallory | Micro Networks |
| Murata | Nichicon | Novacap | Oak Frequency Controls |
| Ohmcraft | Omron | Osillatek | Panasonic |
| Pico Electronics | Piconics | Piezo Technology | Raychem |
| RCD Components | Redpoint Thermalloy | RF Relays | Rohm |
| Rubycon | Schurter | Siemans | State of the Art |
| Spectrol | Spectrum Control | Syfer | Teledyne |
| Tyco | Vecttron Technologies | Vishay (Dale) | Vitamon |