The BC807-40W from Diotec Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 100 nA, Collector Cut off Current 0.1 to 5 µA, Collector Emitter Voltage 45 V, Continuous Collector Current 500 mA. Tags: Surface Mount, PNP Transistor. More details for BC807-40W can be seen below.