The BC857BS-AU_R2_000A1 from PANJIT Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.9 to -0.7 V, Collector Base Voltage -50 V, Collector Cut off Current -5 µA, Collector Emitter Breakdown Voltage -45 V. Tags: Surface Mount, PNP Transistor. More details for BC857BS-AU_R2_000A1 can be seen below.