The 2N2270 from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Collector Base Voltage 60 V, Collector Cut off Current 0.5 µA, Collector Emitter Voltage 45 V, DC Current Gain 50 to 200. Tags: Through Hole, NPN Transistor. More details for 2N2270 can be seen below.