2SA1943 - PNP - Power Transistor - 17A - 250V - TOSHIBA - TO-264
2SA1943 is a PNP high Power Transistor with maximum collector current capability of 17 Amps and Maximum Collector Emitter Voltage of 250V. It is most commonly used in Hi-Fi Audio Amplifier Circuits and general purpose Power Amplifiers. It comes in TO264 package.
Technical Datasheet [PDF - Toshiba]
Recommended for 100W Hi-Fi Audio frequency Amplifier output stage.