BC857W Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -50 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 0.2 W
• DC Current Gain (h_fe): 110 to 800
• Transition Frequency, min: 150 MHz
• Noise Figure, max: 2 dB
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-323

Here is an image showing the pin diagram of this transistor.The BC857W transistor can have a current gain of 110 to 800. The gain of the BC857AW will be in the range from 110 to 220, for the BC857BW it will be in the range from 200 to 450, for the BC857CW it will be in the range from 420 to 800.The complementary NPN transistor to the BC857W is the BC847W.You can replace the BC857W with the BC856W or BC860W.