The CP317X-2N5179-CT from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 2.5 V, Base Emitter Saturation Voltage 1 V, Collector Base Voltage 20 V, Collector Cut off Current 20 nA, Collector Emitter Breakdown Voltage 12 V. Tags: Bare Die, NPN Transistor. More details for CP317X-2N5179-CT can be seen below.