The TIP122 is an NPN Darlington transistor in a TO-220 package, commonly used for switching and driving high-current loads such as motors, solenoids, and relays from microcontroller logic signals.

Specifications

• Type – NPN Darlington (BJT)
• Package – TO-220
• Collector-Emitter Voltage (Vce) – 100 V
• Collector Current (Ic) – 5 A
• Power Dissipation – 65 W (at 25°C)
• DC Current Gain (hFE) – 1000 min
• Mounting – Through-hole, solder legs