TIP122 NPN Darlington Transistor – 5A 100V

The TIP122 is a high-current NPN Darlington bipolar junction transistor designed for power switching and amplification applications. It combines two NPN transistors in a Darlington configuration to deliver extremely high current gain (hFE ? 1000) with minimal base current requirement. With a collector current capability of up to 5A and collector-emitter voltage up to 100V, the TIP122 is ideal for driving motors, relays, solenoids, LEDs, and other power loads directly from microcontrollers or logic circuits. Its TO-220 package provides effective heat dissipation, making it suitable for medium- to high-power control applications.

Features

NPN Darlington transistor configuration

High current gain (hFE ? 1000)

Collector current up to 5A

Collector-emitter voltage up to 100V

Low base current requirement

Integrated base-emitter resistors for improved stability

Suitable for direct microcontroller interfacing

Efficient power switching capability

TO-220 package for better heat dissipation

Ideal for motor and relay driving

Supports low-speed switching applications

Reliable for power control circuits

Suitable for automation and robotics

Through-hole package for easy installation

Specifications

- Model: TIP122

- Device Type: NPN Darlington Bipolar Junction Transistor

- Polarity: NPN

- Collector-Emitter Voltage (Vce): 100V

- Collector-Base Voltage (Vcb): 100V

- Emitter-Base Voltage (Veb): 5V

- Maximum Collector Current (Ic): 5A

- DC Current Gain (hFE): ? 1000

- Collector-Emitter Saturation Voltage (Typical): 2V

- Power Dissipation: Approximately 65W

- Package Type: TO-220

- Mounting Type: Through-Hole

- Integrated Base-Emitter Resistors: Yes

- Operating Temperature Range: -65°C to +150°C

- Application Type: High Current Switching and Amplification

Links

- 3D Model

- Datasheet

Tutorials

TIP122 NPN transistor 5A 100V