The Infineon IPA50R199CPXKSA1 is a 500 V N-channel CoolMOS MOSFET in a TO-220 Full Pack package — the fully isolated tab means no insulating pad needed, which is handy when you are swapping it in a tight PSU chassis without a bench.
This part carries a Not Recommended for New Designs (NRND) status. For a BOM that is already in production, the NRND flag is a heads-up to review your long-term supply plan, not an immediate stop-ship.
Key switching specs at a glance
Gate charge is 45 nC at 10 V, input capacitance 1800 pF at 100 V drain — numbers that tell you the driver side of the BOM: a 10 V gate drive rail is required to hit the rated Rds(on), and the moderate Qg keeps switching losses manageable in a 100 kHz PFC stage. The 3.5 V max threshold at 660 µA drain current gives a clean turn-on margin against noise on the gate. Avalanche ruggedness is typical for the CoolMOS family, though the datasheet should be checked for single-pulse energy limits at your operating point.
Mounting and handling note
That is a field-service win: one less part to lose, and the orientation is obvious enough to get it right the first time. Power dissipation is rated 139 W at case temperature, so a decent heatsink is assumed for anything near the 17 A continuous rating.