The BD442 from Lision Technology is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Collector Base Voltage 80 V, Collector Emitter Breakdown Voltage 80 V, Collector Emitter Voltage 80 V, Continuous Collector Current 4000 mA. Tags: Through Hole, PNP Transistor. More details for BD442 can be seen below.