It is a through-hole device in the TO-220 Full Pack (PG-TO220-FP) package, which means the back of the tab is electrically isolated — no mica washer or insulating pad needed when bolting it to a heatsink.
The Rds(on) is specified at 1.5 Ohm maximum when driven with 10 V on the gate and 1 A of drain current. That is a moderate on-resistance — not the single-digit milliohm you would pick for a multi-kilowatt PFC, but a reasonable figure for a 30 W auxiliary winding or a low-power flyback running at a few tens of watts. The gate drive requirement is a standard 10 V, and the total gate charge is only 10.5 nC at that drive voltage, so a simple gate-drive transformer or a low-current driver IC can switch it without a lot of extra BOM cost.
That does not mean it has been discontinued today, but it means Infineon has flagged it as a part they intend to phase out — no new design should start with it.
Package and mounting — the TO-220 Full Pack advantage
The PG-TO220-FP (Full Pack) package is a through-hole TO-220 with a fully molded, electrically isolated backside. That saves a step in assembly — no thermal pad or mica insulator between the tab and the heatsink.