The UMD12NHE3 from Micro Commercial Components is a Bipolar Junction Transistor with Emitter Base Voltage -40 to 10 V, Collector Base Voltage 0.3 V, Collector Emitter Breakdown Voltage 50 V, Collector Emitter Voltage 0.5 V, Continuous Collector Current 0.5 µA. Tags: Surface Mount, NPN Transistor, PNP Transistor. More details for UMD12NHE3 can be seen below.