TIP122 NPN Darlington Transistor - 100 V, 5 A, TO-220

The TIP122 NPN Darlington transistor is a robust component designed for switching high-current loads. By integrating two bipolar transistors in a Darlington configuration, it provides a very high current gain, allowing heavy loads to be controlled with a low-level control signal from a microcontroller such as an Arduino or Raspberry Pi.

This component is ideal for driving DC motors, relays, solenoids, or solenoid valves. With a maximum voltage of 100 V and a continuous current of 5 A, it suits many industrial and maker applications. The TO-220 package facilitates mounting on a heatsink for sustained loads.

Specifications

Note: An internal base resistor (typically 2.7 kΩ) simplifies direct connection to microcontrollers. Use a heatsink if continuous current exceeds 1-2 A.