| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| 1N957A | 6.8 V, 18.5 mA, silicon planar zener diode | distributor | DO | 2 | - | - | 172 K |
| 1N957A | 6.8 V, zener diode | distributor | - | 2 | - | - | 33 K |
| 1N957B | 6.8 V, 18.5 mA, silicon planar zener diode | distributor | DO | 2 | - | - | 172 K |
| 1N957B | 6.8 V, zener diode | distributor | - | 2 | - | - | 33 K |
| 1N957C | 6.8 V, zener diode | distributor | - | 2 | - | - | 33 K |
| 2N4957UB | Chip: geometry 0006; polarity PNP | distributor | - | - | - | - | 29 K |
| 2N4957UB | Chip: 3.0V; 30A geometry 0006; polarity PNP | distributor | Cersot | 3 | -65°C | 200°C | 67 K |
| MSU2957C40 | 40 MHZ 24 KB internal memory MCU, on-line down-loadable | Mosel-Vitelic | - | - | 0°C | 70°C | 70 K |
| SD4957F | Chip: geometry 0006; polarity PNP | distributor | - | - | - | - | 29 K |
| SQ4957F | Chip: geometry 0006; polarity PNP | distributor | - | - | - | - | 29 K |
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