The TTC019 from Toshiba is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Base Emitter Saturation Voltage 0.85 to 1.10 V, Emitter Cut off Current 100 nA, Collector Base Voltage 120 V, Collector Cut off Current 100 nA. Tags: Surface Mount, NPN Transistor. More details for TTC019 can be seen below.