BUY MTM5N40 https://www.utsource.net/itm/p/1840264.html
N-Channel Power MOSFETs, 5.5A, 350 V/400V
MTM5N40 is a N-Channel Enhancement Mode Power MOSFET produced by Motorola. Description: The MTM5N40 is a power MOSFET designed for use in high frequency switching applications. Features: Low On-Resistance Low Gate Charge Fast Switching Low Input Capacitance Low Output Capacitance Low Threshold Voltage High Current Capability Low Thermal Resistance Applications: The MTM5N40 is suitable for use in high frequency switching applications such as DC-DC converters, motor control, and power supplies. (For reference only)