
The BC857 transistor is a PNP general-purpose transistor. This transistor's primary uses are general-purpose switching and amplification. The BC857 PNP transistor is packaged in a tiny SOT-23 package. It operates on low current and voltage. It's an SMD version of the BC557 TH Transistor.
Features:
Specifications
| 
 Part Number  | 
 BC857  | 
| 
 Mounting Style  | 
 SMD  | 
| 
 Package  | 
 SOT-23  | 
| 
 Transistor Polarity  | 
 PNP  | 
| 
 Collector-Emitter Voltage VCEO Max  | 
 -45 V  | 
| 
 Collector-Emitter Voltage VCES Max  | 
 -50V  | 
| 
 Collector-Base Voltage VCBO Max  | 
 -50V  | 
| 
 Emitter-Base Voltage VEBO Max  | 
 -5V  | 
| 
 Power Dissipation at Tamb=25C Ptot  | 
 330mW  | 
| 
 Operating Temperature  | 
 -55 to +150C  | 
| 
 Collector Cut-Off Current  | 
 Max -15nA  | 
| 
 Transition Frequency  | 
 150fT  |