The QST2TR from ROHM Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage -6 V, Emitter Cut off Current -100 nA, Collector Base Voltage -15 V, Collector Cut off Current -100 nA, Collector Emitter Breakdown Voltage -12 V. Tags: Surface Mount, PNP Transistor. More details for QST2TR can be seen below.