The MMBTA06 from Rectron Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 4 V, Base Emitter Saturation Voltage 1.2 V, Emitter Cut off Current 100 nA, Collector Base Voltage 80 V, Collector Cut off Current 0.1 to 1 µA. Tags: Surface Mount, NPN Transistor. More details for MMBTA06 can be seen below.