MPS A92 (MPSA92) is a high-voltage PNP transistor commonly used in electronic circuits.
 
Basic Description
Type: PNP Bipolar Junction Transistor (BJT)
Package: TO-92 (small plastic transistor)
Marking on body: A92
 
Key Specifications
Collector-Emitter Voltage (Vce): up to 300V
Collector Current (Ic): about 200mA – 500mA
Power Dissipation: 625 mW
Gain (hFE): ~25 to 80
Frequency (fT): ~50 MHz
 
Pin Configuration (TO-92)
When flat side faces you (legs down):
Collector (C)
Base (B)
Emitter (E)
 
Complementary Transistor
Works with: MPSA42 (NPN type)
 
Common Uses
High-voltage switching circuits
Power supplies
TV/video output stages
Relay drivers
General amplification
 
Simple Explanation
MPS A92 is used when you need to control high voltage signals with a small transistor. Because it is PNP, current flows when the base is pulled LOW relative to the emitter.