The 2SD633 from Mospec Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 2.5 V, Emitter Cut off Current 3 mA, Collector Base Voltage 100 V, Collector Cut off Current 100 µA. Tags: Through Hole, NPN Transistor. More details for 2SD633 can be seen below.