TIP122 Transistor

Power NPN Darlington Transistor which is designed for general purpose amplifier and low speed switching applications. It can generally drive high voltage DC Loads.

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About TIP122 Transistor

The TIP122 is a Darlington pair NPN transistor. It functions like a normal NPN transistor, but since it has a Darlington pair inside it has a good collector current rating of about 5A and a gain of about 1000. It can also withstand about 100V across its collector- Emitter hence can be used to drive heavy loads.


  • Can be used to switch high current (upto 5A) loads
  • Can be used as medium Power switches
  • Used where high amplification is needed
  • Speed control of Motors
  • Inverter and other rectifier circuits
Weight 10 g
Dimensions 1 × 4 × 1 cm
Collector-Base Voltage (Vcb) (V)


Collector Current (DC) (A)


Storage condition (℃)

-65 to 150

Junction Temperature (°C)



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