650 V, 5 A, 1.15 Ohm — the switching-loss envelope
The STU7N65M2 N-channel MOSFET has a maximum Rds(on) of 1.15 Ohm at 2.5 A with 10 V gate drive, and a 650 V drain-source voltage rating.
9 nC gate charge — light drive, fast edges
Total gate charge is 9 nC at 10 V, and input capacitance measures 270 pF at 100 V drain bias. That combination means a modest gate driver can switch this FET at tens of kHz without excessive cross-conduction losses — useful in flyback converters and auxiliary power stages where board space is tight.
Through-hole IPAK — field-swappable
Housed in a TO-251 (IPAK) through-hole package with short leads, this part is a practical field replacement candidate. The three leads are clearly spaced, and the tab is the drain — orientation is unambiguous even without a schematic in hand. No hot-air station needed; a standard iron and solder sucker get it done on site.
