BC 547 - General purpose NPN Transistor
The BC547 is a common used general-purpose low-power NPN transistor for amplifying or switching applications. It is typically used for low-current, medium voltage and moderate speed purposes. This transistor is popular among many hobbist and in academia, and is arguably one of the most well-known general-purpose transistors in Europe. The complementary or PNP version of the BC547 is the BC557. This general-purpose transistor is available in various packages, including the though-hole (TO-92) and surface mount (SOT-23). The surface mount device (SMD) is the BC845.
General Operation Specifications
| Symbol | Parameter | Value | Units |
|---|---|---|---|
| VCBO | Collector-base Voltage | 50 | V |
| VCEO | Collector-emitter Voltage | 45 | V |
| VEBO | Emitter-base Voltage | 6 | V |
| IC | Collector Current (DC) | 100 | mA |
| PC | Collector Power Dissipation | 500 | mW |
| hFE BC547A | DC Current Gain | 110 ~ 220 | |
| hFE BC547B | DC Current Gain | 200 ~ 450 | |
| hFE BC547C | DC Current Gain | 420 ~ 800 | |
| TSTG | Storage Temperature | -65 ~ 155 | °C |
A Fairchild Semiconductor™ datasheet for the BC547 can be found here:
https://www.farnell.com/datasheets/59764.pdf