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**IRF640N N-Channel Power MOSFET** The **IRF640N** is an **N-channel enhancement-mode power MOSFET** designed for high-speed switching and power control applications. It is widely used to switch **motors, LEDs, relays, solenoids, power supplies, and DC-DC converters**. The device offers **low ON-state resistance (RDS(on))**, high current handling capability (up to **33A**), and supports drain-source voltages up to **100V**, making it suitable for industrial, automotive, and embedded system applications. It is commonly used with Arduino, ESP32, STM32, and other microcontrollers through an appropriate gate driver.