Jump to page content

Keyboard–switch database Omron

Switch series


Keyboards (as manufacturer)

Model Year(s) Switches Serial PCB codes Reference Notes
Sony M35 keyboard 1985 (IC) Omron vase spring typical
Omron B3G-S “flat” (function row)
2432094-9, B5Y-C073-401 deskthority.net This is another of those really complicated examples. This is actually two keyboards: a plate-mounted B3G-S keyboard for just the function keys (containing all the logic circuitry), plus a vase spring membrane keyboard with its own PCB for the remainder of the keyboard, each with separate part numbers! (The B5G part number is for the controller/B3G PCB, and the B5Y part number is for the vase spring PCB.)
Sony SMC-3000G keyboard 1987 (IC) Omron B3G-S “flat” B5GS-R114-534, 0127370-6B park8.wakwak.com Additional PCB codes:

ADDS 2020 1987 (IC)
1988 (case)
Omron B3G-S Linear White (Japan; R:N)
Omron B3G-S Linear Amber Heavy (Japan; R:B) (space bar)
Omron B3G-S Linear Amber (Japan; R:B) (enter)
Omron B3G-S Linear White LED (Japan) (lock)
W056644 355-15000, 0273247-0B kbd.rzw.jp Additional labels on the PCB read:
35515014FPN and 06Y7SA32006
SIC 101A8 1989 (IC) Omron B3G-S Click Amber (un-Japan; R:N)
Omron B3G-S Click White (un-Japan; R:N) (space bar)
B5GS-R101-620, 0292414-0A kbtalking.cool3c.com White clicky B3G-S used also for the enter key.

PCB code 3: TW2147

The smaller chips are marked 941405, which for Mitsubishi indicates a year ending 9. This cannot be 1979 and is unlikely to be 1999, so 1989 is presently assumed. That would make the controller IC two years older if it really is from 1987