600 V N-channel with an isolated tab — the TO-220FP thermal budget
The STF33N60M2: The 35 W power dissipation ceiling at case temperature is the practical limit in a real enclosure, not the 26 A continuous drain rating.
This is the figure a power supply engineer uses to size the heatsink for a given output power.
45.5 nC gate charge — driver current at the target switching frequency
For a 100 kHz hard-switching converter, the average gate-drive current is 4.55 mA, but the peak current required to charge the gate in the Miller plateau is higher — typically 1–2 A peak for fast turn-on.
Active production, isolated package — no LTB tracking, no insulating washer
It is ROHS3 compliant, covering the full restricted-substance list without exemptions. The TO-220 Full Pack package saves one assembly step (no insulating washer or thermal grease on the tab), but the thermal resistance is higher than the standard TO-220; the 35 W dissipation limit must be respected in the thermal design.