900 V CoolMOS™ in a fully isolated through-hole package
The IPA90R500C3XKSA1: It comes in a TO-220-3 Full Pack (PG-TO220-FP) — the fully isolated plastic package that lets you bolt it directly to a heatsink without an insulating washer.
At 500 mOhm max with 6.6 A drain current and 10 V on the gate, conduction loss is predictable for a 900 V device in this current class.
Infineon lists the IPA90R500C3XKSA1 as obsolete.
The 34 W maximum power dissipation at case temperature is the thermal budget for the heatsink design; the TO-220 Full Pack's metal tab is electrically isolated, so no mica washer is needed, but the thermal resistance is higher than a standard TO-220 — account for that in the junction temperature calculation.
