The ZDT1048TA from Diodes Incorporated is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 1000 to 1100 mV, Emitter Cut off Current 0.3 to 10 nA, Collector Base Voltage 50 V, Collector Cut off Current 0.3 to 10 nA. Tags: Surface Mount, NPN Transistor. More details for ZDT1048TA can be seen below.