The STF25NM60ND: The TO-220FP full-pack package provides a fully isolated tab, simplifying heatsink mounting without an insulating pad.
For existing BOM lines, the only sourcing channel is the independent distribution market — surplus inventory, last-time-buy remnants, or broker stock.
The 600 V Vdss gives a solid voltage margin for universal-input (85–265 VAC) power supplies, where the rectified DC bus peaks around 375 V. The 21 A continuous drain current is rated at case temperature 25°C — derating is significant at elevated case temperatures, so the actual usable current in a 100°C case environment will be lower. Gate charge of 80 nC at 10 V is moderate; a standard gate-driver IC can switch it in the 50–100 kHz range without excessive drive losses. Input capacitance of 2400 pF at 50 V Vds is typical for this voltage class and sets the switching loss contribution from the Miller plateau.