100V P-channel in a TO-252 — what this switch is for
It comes in a surface-mount TO-252-3 (DPak) package, PG-TO252-3 per Infineon's naming. The 1Ω maximum on-resistance is specified at 10V gate drive, so this is not a logic-level part — the design needs a 10V rail or a gate-driver stage to turn it on fully. With a 175°C maximum junction temperature, it handles high-ambient environments like industrial power supplies, motor pre-drive circuits, or automotive auxiliary loads where a P-channel high-side switch is preferred.
Gate drive and switching — 10V required, 12nC Qg
The gate threshold voltage is 4V maximum at 380µA drain current. The rated Rds(on) of 1Ω is measured at 10V Vgs.
Thermal and package — 38W dissipation, TO-252 footprint
Maximum power dissipation is 38W at case temperature, so the board copper area and any heatsinking on the TO-252 tab matter. The TO-252 (DPak) footprint is common; the tab is the drain, so PCB layout for the high-side switch needs a wide copper pour for thermal relief.
That means it's a safe choice for a new BOM line or a production sustainment buy — no imminent obsolescence to plan around.