The D40D8 from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 1.5 V, Collector Base Voltage 75 V, Collector Cut off Current 100 nA, Collector Emitter Breakdown Voltage 60 V. Tags: Through Hole, NPN Transistor. More details for D40D8 can be seen below.