IRF9540N P-CHANNEL POWER MOSFET

The IRF9540N is a popular P-channel power MOSFET manufactured by International Rectifier , designed for high-current switching and amplification in industrial, automotive, and consumer electronics applications. Built into the robust TO-220 through-hole package , this MOSFET combines reliable performance with easy mounting on standard heatsinks for sustained high-power operation. With a maximum drain-source voltage of 100V and a continuous drain current rating of 23A , the IRF9540N is well suited for driving high-current loads such as DC motors, solenoids, lamps, heaters, and high-power LEDs . As a P-channel device, it is ideal for high-side switching — connecting the load between the MOSFET and ground while keeping the load's negative terminal at system ground for simpler wiring and safer load disconnection. The IRF9540N is fully avalanche rated , meaning it can absorb energy spikes from inductive loads without damage — an essential feature when switching motors, solenoids, and transformers. Combined with its dynamic dv/dt rating and fast switching speed , this MOSFET performs excellently in PWM motor control, switch-mode power supplies, and H-bridge drivers . Its wide operating junction temperature range of up to 175°C ensures reliable performance even in demanding thermal environments. The IRF9540N is the P-channel complement to the IRF540N N-channel MOSFET — together, the two devices form a classic complementary pair commonly used in H-bridges and push-pull output stages . Note on gate drive: The IRF9540N is not a logic-level MOSFET and requires a gate-source voltage of around ?10V to fully enhance. When switching from a 3.3V or 5V microcontroller, use a dedicated MOSFET gate driver or a transistor-based driver stage to provide the proper gate voltage. For high-side applications, a bootstrap or charge pump circuit may also be required. Specifications Transistor Type: P-Channel Power MOSFET Manufacturer: International Rectifier Part Number: IRF9540N Drain-Source Voltage (V_DS) Max: ?100V Continuous Drain Current (I_D) Max: ?23A Maximum Operating Temperature: +175°C Avalanche Rating: Fully avalanche rated Switching Speed: Fast switching Dynamic dv/dt Rating: Yes Package / Case: TO-220 Mounting Type: Through-hole Pin Count: 3 (Gate, Drain, Source) Condition: Brand new — 100% original Pin Configuration (TO-220) Pin 1: Gate (G) Pin 2: Drain (D) Pin 3: Source (S) Applications High-side load switching (load enable / disconnect circuits) DC motor control and H-bridge driver circuits PWM speed control for motors, fans, and pumps Reverse polarity protection for DC supplies Battery management and disconnect systems High-current LED and lamp drivers Solenoid and relay drivers Switching power supplies and DC/DC converters Inverter and converter circuits Solar charge controllers Automotive electronics and switching applications Audio amplifier output stages Industrial control and automation systems Robotics and high-current actuator control