IRF540 N-Channel Power MOSFET (TO-220 Package)

The IRF540 N-Channel Power MOSFET is a high-performance power transistor designed for high-speed switching and power control applications. It is widely used in motor drivers, inverters, SMPS, battery chargers, LED dimmers, robotics, solar systems, and DIY electronics. With a 100V drain-source voltage rating, 22A continuous drain current, and low ON resistance, the IRF540 is suitable for medium- to high-power switching circuits.

Features

• Full Name: IRF540 N-Channel Power MOSFET
• High-speed switching performance
• Low ON-state resistance
• High current handling capability
• Rugged TO-220 package
• Suitable for PWM applications
• Avalanche rated for improved reliability
• Low gate charge
• Easy to mount with a heat sink
• Durable and reliable construction

Specifications

Pin Configuration

When viewed from the front (text facing you, pins downward):

Note: The metal tab is internally connected to the Drain (D).

Applications / Uses

• DC motor control
• PWM speed controllers
• LED dimmers
• Battery chargers
• Solar charge controllers
• Switching power supplies (SMPS)
• Inverters
• Robotics
• Arduino power switching circuits
• DIY electronics projects

Advantages

• High voltage capability
• High current handling
• Fast switching speed
• Low ON resistance
• Rugged TO-220 package
• Reliable performance
• Cost-effective solution

Size

• Package Type: TO-220
• Body Width: Approx. 10 mm
• Body Height: Approx. 15 mm
• Overall Height (with leads): Approx. 30 mm
• Lead Pitch: 2.54 mm
• Weight: Approximately 2 g

Package Includes

• 1 × IRF540 N-Channel Power MOSFET (TO-220)

Note: The IRF540 is not a logic-level MOSFET. It achieves its specified low ON resistance with approximately 10V gate drive. When driven directly from 3.3V or 5V microcontrollers (such as ESP32 or Arduino), it may not switch fully on and can overheat under heavy loads. For direct logic-level control, use a logic-level MOSFET (such as IRLZ44N) or a suitable MOSFET gate driver.