The 2SB1123T-TD-E from onsemi is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 0.9 to 1.2 V, Emitter Cut off Current 100 nA, Collector Base Voltage 60 V, Collector Cut off Current 100 nA. Tags: Surface Mount, PNP Transistor. More details for 2SB1123T-TD-E can be seen below.