The 2SD743S from Mospec Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 10 µA, Collector Base Voltage 100 V, Collector Cut off Current 10 µA, Collector Emitter Breakdown Voltage 80 V. Tags: Through Hole, NPN Transistor. More details for 2SD743S can be seen below.