BC857B is a PNP small signal transistor from ROHM that is ideal for switching and AF amplifier applications and has high current gain.
The ROHM BC857B is a PNP small‑signal transistor intended for switching and audio‑frequency amplifier applications. The data sheet provides the device’s electrical characteristics, maximum ratings, and typical performance curves.
Packaging information, absolute maximum ratings, and usage notes are also included, along with legal notices and contact details for ROHM support.
| Collector‑base voltage (Vcso) | 50 V |
|---|---|
| Collector‑emitter voltage (Vceo) | 45 V |
| Emitter‑base voltage (Vebo) | 5 V |
| Collector current (Ic) | 0.1 A |
| Power dissipation (Pe) | 0.20 W |
| Junction temperature (Tj) | 150 °C |
| Storage temperature (Tstg) | -65 to 150 °C |
| Transition frequency (ft) | 250 MHz |
| Package type code | 7116 |
| Basic ordering unit | 3000 pieces |
The BC857B is rated for a collector‑emitter voltage of 45 V.
The DC current transfer ratio (hFE) is specified between 210 and 480.
It is supplied in tape‑and‑reel format, type code 7116, with a basic ordering unit of 3000 pieces.