650 V CoolMOS in a SOT223 — where it fits the bill
The Infineon IPN60R2K0PFD7SATMA1 is a 650 V N-channel CoolMOS PFD7 MOSFET in a PG-SOT223-3-1 surface-mount package. This is a part sized for auxiliary flyback supplies, bias rails in industrial PSUs, and LED lighting drivers where the board space is tight and the voltage rail sits above 400 V. The 150°C maximum junction temperature gives thermal headroom when the part is running in a warm enclosure alongside a transformer and electrolytic caps.
Rds(on) and the thermal reality in SOT223
The 2 Ohm Rds(on) is specified at 500 mA and 10 V gate drive. The 6 W package dissipation limit at case temperature constrains the average current. Input capacitance is 134 pF at 400 V drain-source. The gate threshold voltage max is 4.5 V at 30 µA.
