The IPAN80R450P7XKSA1: The TO-220-3 Full Pack package (PG-TO220-3-FP) has a fully isolated mounting tab — no insulating washer or pad needed between the device and the heatsink. This simplifies assembly and improves thermal coupling to the heatsink, but the package limits power dissipation to 29 W at case temperature.
Input capacitance is 770 pF at 500 V drain-source. This is a moderate value that keeps the switching node capacitance manageable in resonant or quasi-resonant topologies where the MOSFET's output capacitance participates in the tank circuit.
