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| Seeq Tech. | Seiko Instruments | Semtech | SGS |
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| Sony | Spraque | ST Micro | Sullins Electronics |
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| Teledyne | Temic | Texas Instuments | Thomas & Betts |
| Thompson | Toshiba | Toyo | Toyocom |
| TRW | Tyco | UCC | Unitrode |
| Valpey Fisher | Vectron International | Vishay | Vitelic |
| Vitesse | Vitramon | Western Digital | WIMA |
| Winbond | Xicor | Xilinx | Zarlink |
| Zetex | Zilog |
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