The BC857CW_R1_00001 from PANJIT Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage -0.9 to -0.7 V, Emitter Cut off Current 100 nA, Collector Base Voltage -50 V, Collector Cut off Current 4 µA. Tags: Surface Mount, PNP Transistor. More details for BC857CW_R1_00001 can be seen below.