Electrospec 12 parts by RCA, Motorola, Centre Suisse d'Electronique et de Microtechnique, Harris, KEMET: TSCC51CCOD 12CA, TSCC51CML 12CA, TSCC51CTOE 12CA, TSCC51CWEV 12CA, 12CA(BE)... to 12CK3/12CL3

Manufacturers: RCA, Motorola, Centre Suisse d'Electronique et de Microtechnique, Harris, KEMET, Intersil, GE, TRW Electronic Components Group, TI Texas Instruments, Arizona Microchip Technology), Chipcon, General Instrument (GI, KOA, Philips, National Semiconductor, Catalyst, Goldstar, CORN, Acrian RF Transistor, Fairchild Semiconductor, Hitachi, Rohm, Toshiba, Techno Concepts, JRC), New Japan Radio (NJR, Sharp, MALLO, International Rectifier, Linear Technology Corporation, SGS-Thompson ST Microelectronics, Nippon Electrical Company (NEC), Sanyo, Samsung, Signetics, Sony