Multicomp Pro TIP31C NPN Power Transistor, TO-220, 3A 100V

The Multicomp Pro TIP31C is a robust, high-performance NPN power transistor engineered to manage significant current and voltage loads. Its construction makes it an optimal choice for challenging applications where reliability and efficiency are paramount, such as in audio amplifier output stages, linear and switched-mode power supplies, and general-purpose switching circuits.

A key benefit of this component is its high current handling capability paired with a low collector-emitter saturation voltage. This combination allows it to switch high currents effectively while minimising power dissipation and thermal losses, leading to cooler running and more efficient systems. The transistor also offers good gain and fast switching characteristics, supporting its use in higher-frequency applications.

Designed with durability in mind, its robust build ensures stable operation even in demanding environmental conditions. The TIP31C is the complementary NPN match to the PNP TIP32C transistor, making it an ideal selection for designs requiring a symmetrical push-pull pair, commonly found in audio amplification and certain power regulation circuits.

Key Specifications

• High Voltage Rating: Collector-emitter voltage (Vce) of 100V.
• High Current Capacity: Continuous collector current (Ic) of 3A.
• Substantial Power Handling: Power dissipation rating of 40W.
• Wide Temperature Range: Operating junction temperature from -65°C to 150°C.
• Low Saturation Voltage: Collector-emitter saturation voltage of 1.2V at Ic=3A.
• Stable Gain: DC current gain (hFE) of 10 at Ic=3A.
• Standard Package: Housed in a through-hole mount TO-220 case style for easy installation and heat sinking.

This versatile transistor is a fundamental component for engineers, hobbyists, and maintenance technicians working on electronic projects and repairs.