The 2SA1012B from Lision Technology is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Collector Base Voltage 50 V, Collector Emitter Breakdown Voltage 50 V, Collector Emitter Voltage 50 V, Continuous Collector Current 2000 mA. Tags: Surface Mount, PNP Transistor. More details for 2SA1012B can be seen below.