The 2N1572 from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Collector Base Voltage 125 V, Collector Cut off Current 1000 nA, Collector Emitter Breakdown Voltage 80 V, Collector Emitter Voltage 80 V. Tags: Through Hole, NPN Transistor. More details for 2N1572 can be seen below.