19 mOhm Rds(on) — the conduction-loss floor in a 650 V part
The IPW65R019C7FKSA1: That Rds(on) figure is the key spec for a designer sizing the conduction losses in a high-current PFC or LLC resonant converter — at 75 A continuous drain current the I²R loss at 19 mOhm is about 107 W, which sets the heatsinking requirement. The 650 V drain-to-source rating gives enough headroom for 400 V bus applications with switching transients.
Gate charge and switching — 215 nC at 10 V
Total gate charge is 215 nC at 10 V, which is moderate for a 75 A device. At a 100 kHz switching frequency the average gate-drive current needed is about 21.5 mA — well within the capability of a standard gate-driver IC. The input capacitance is 9900 pF at 400 V drain bias, so the driver must source enough peak current to charge that capacitance during the Miller plateau without excessive slew-rate limiting.
Through-hole TO-247 — thermal and assembly fit
The part comes in a TO-247-3 (PG-TO247-3) through-hole package. The large tab area couples directly to a heatsink, which is necessary given the 446 W maximum power dissipation at the case. The through-hole mounting suits designs where vibration resistance and manual rework are priorities over automated SMT placement. The listed shipping form is Tube, so plan for tube-to-reel transfer if the pick-and-place line expects tape.
The wide range also gives margin for fault conditions like short-circuit or overcurrent events that cause transient junction heating.