The 2SA940 or A940 is a PNP power transistor designed for audio amplifier stages, vertical output circuits and general purpose high voltage applications. This transistor is comes in the Package of TO-220 case and it has a high collector-emitter voltage rating. So in this article describes about the Pinout, Features and Equivalent for replacement details.
2SA940 Transistor Pinout
The 2SA940 comes in a standard TO-220 package. To check the pinout of this transistor , you jus hold the transistor metal tab facing the backside and pins are pointing downward. Then count the transistor pins from left to right side then it will be,
- Pin 1 – Base
- Pin 2 – Collector (connected to mounting tab)
- Pin 3 is Emitter
Features and Specifications
- Type: PNP Silicon Power Transistor
- High voltage rating
- Collector Emitter Voltage VCEO: -150V
- Collector Base Voltage VCBO: -150V
- Collector current (IC): -1.5A
- Base current (IB): -0.5A
- Collector power dissipation: 25W (at Tc = 25°C)
- Current gain (hFE): 40 – 140
- Transition frequency (fT): 4 MHz
- Offered in a TO-220 package for efficient heat dissipation
Equivalent Transistor for Replacement
- 2SA1265
- 2SA1013
- KSA940
- 2SA949
Complementary transistor
The 2SC2073 NPN Transistor is the Complementary pair for 2SA940 PNP transistor with identical features and specifications.
Applications
- Audio amplifier output stages and driver stages.
- Vertical output stages in CRT TVs.
- General purpose high voltage switching circuits.
- Power supplies and driver circuits.
- Low frequency power amplification.
