2SA1943 – PNP Power Transistor

Fr 2,000.00


2SA1943 is a high power PNP transistor originally from Toshiba. Due to its high current gain and collector current it is very commonly used in High power audio circuits or AF amplifiers. But now the Transistor is absolute from Toshiba and it has been replaced with TTA1943.


  • Medium-power PNP Transistor
  • DC Current Gain (hFE) 55 to 160
  • Continuous Collector current (IC) is 15A
  • Collector-Emitter voltage (VCE) is 230 V
  • Collector-Base voltage (VCB) is 230V
  • Emitter Base Voltage (VBE) is 5V
  • Available in To-264 Package

2SA1943 Equivalent PNP Transistor


How to use 2SA1943 Transistor

The 2SA1943 is mainly used in amplifier designs. Most amplifiers employ a push-pull circuit similar to that of Class B amplifier, which requires a NPN transistor and PNP transistor. The 2SA1943 is a PNP Transistor and it also has its complementary 2SE5200 which is a NPN type transistor. Both these transistors are often used together to design high power Amplifiers.


  • Audio frequency Amplifier
  • AF /RF circuits
  • Low Slew rate devices
  • Push-Pull configuration circuits
  • high current switching (upto 15A) loads
  • Can be used as medium Power switches


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