BC317C Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -50 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -0.15 A
• Collector Dissipation: 0.31 W
• DC Current Gain (h_fe): 420 to 800
• Noise Figure, max: 2 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC317C is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads.
Here is an image showing the pin diagram of this transistor.The BC317C transistor can have a current gain of 420 to 800. The gain of the BC317 will be in the range from 110 to 800, for the BC317A it will be in the range from 110 to 220, for the BC317B it will be in the range from 200 to 450.The complementary NPN transistor to the BC317C is the BC320C.The BC857 (SOT-23), BC857C (SOT-23), BC857CW (SOT-323), BC857W (SOT-323), BC860 (SOT-23), BC860C (SOT-23), BC860CW (SOT-323) and BC860W (SOT-323) is the SMD version of the BC317C transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BC317C with the BC320, BC320C, KSP55, KSP56, KTC9015, MPS751, MPS751G, MPSA55, MPSA55G, MPSA56, MPSA56G, MPSW55, MPSW55G, MPSW56, MPSW56G or ZTX792A.