The 3DD13001-B from SeCoS Corporation is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Base Emitter Saturation Voltage 1.2 V, Emitter Cut off Current 100 µA, Collector Base Voltage 600 V, Collector Cut off Current 100 µA. Tags: Through Hole, NPN Transistor. More details for 3DD13001-B can be seen below.