The BCX51T from Nexperia is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Emitter Cut off Current -100 nA, Collector Base Voltage -45 V, Collector Cut off Current -10 uA, Collector Emitter Breakdown Voltage -45 V. Tags: Surface Mount, PNP Transistor. More details for BCX51T can be seen below.