# NPN transistor, TIP31, TO220

> NPN power transistor TIP31 (TIP31C), in TO220 package for easy mounting and good heat dissipation. Supports a maximum Collector-Emitter voltage of 100V and a maximum Collector current of 3A DC. The base acts as an activation trigger, with a maximum voltage of 5V and maximum current of 1A DC. Used for switching loads, power supplies, relays, motors and simple amplification.

- Page: https://sigmanortec.ro/en/npn-transistor-tip31-to220
- Price: 2.42 RON
- Availability: In stock; 1-2 zile
- Reference: 22141 · EAN: 5946634444382
- Category: Electronic components > Transistors
- Package (shipping data): 0.003 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

NPN power transistor for controlling and switching loads in electronic circuits, in TO220 housing for easy mounting and good dissipation, supports up to 100V between collector and emitter and 3A DC collector current, the base is used as an activation trigger with up to 5V and 1A DC, ideal for power supplies, relays, motors and simple amplification.
TIP31C npn transistor, TO220 case
Base: trigger for activating the circuit
Collector: connected to the load
Emitter: connected to ground
Maximum voltage between Collector and Emitter: 100V
Maximum collector current: 3A DC
Base maximum voltage: 5V
Maximum current Base: 1A DC