600 V CoolMOS in the isolated TO-220FP — what you're looking at
The IPA60R520E6XKSA1: This is a through-hole, isolated-tab device — the full-pack moulding means the metal tab is electrically isolated, so you don't need a mica washer or silicone pad when bolting it to a heatsink.
Switching performance — what the gate charge and capacitance numbers tell you
Gate charge is 23.4 nC at 10 V; input capacitance is 512 pF at 100 V drain-source.
Infineon lists the IPA60R520E6XKSA1 as Obsolete. If you're repairing a board that originally used this part, the replacement path is a parametric match from the current CoolMOS series — look for a 600 V N-channel in TO-220FP with similar Rds(on) and Qg, then verify gate-drive voltage and pin compatibility.
