The 2N1722A from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 10 V, Emitter Cut off Current 0.5 to 10 mA, Collector Base Voltage 180 V, Collector Cut off Current 0.1 mA, Collector Emitter Breakdown Voltage 120 V. Tags: Screw Mount, NPN Transistor. More details for 2N1722A can be seen below.