IRF9540N P-Channel Power MOSFET
The IRF9540N P-Channel Power MOSFET from International Rectifier is a high-performance switching transistor in a rugged TO-220 package. It handles 23A continuous current and a drain-source voltage of up to 100V, with fast switching, dynamic dv/dt rating, and full avalanche rating for reliability. Operating up to 175°C, it's ideal for high-side switching, motor control, H-bridge circuits, power management, and reverse polarity protection in industrial and DIY electronics applications.
ترانزستور MOSFET قناة P موديل IRF9540N من شركة International Rectifier هو ترانزستور تبديل عالي الأداء بغلاف TO-220 متين. يتحمّل تياراً مستمراً 23 أمبير وجهد جامع-باعث حتى 100 فولت، مع تبديل سريع، وتقييم dv/dt الديناميكي، وتقييم الانهيار (Avalanche) الكامل للموثوقية. يعمل حتى 175°م، وهو مثالي لتطبيقات التبديل من جهة الموجب، التحكم بالمحركات، دوائر H-Bridge، إدارة الطاقة، والحماية من عكس القطبية.
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