The BD438 from Comset Semiconductors is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Emitter Cut off Current -1 mA, Collector Base Voltage -45 V, Collector Cut off Current -100 µA, Collector Emitter Voltage -45 V. Tags: Through Hole, PNP Transistor. More details for BD438 can be seen below.