The 2SA2184 from Toshiba is a Bipolar Junction Transistor with Emitter Base Voltage -7 V, Base Emitter Saturation Voltage -1.2 V, Emitter Cut off Current -1 µA, Collector Base Voltage -550 V, Collector Cut off Current -10 µA. Tags: Surface Mount, PNP Transistor. More details for 2SA2184 can be seen below.