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STMicroelectronics STF33N65M2 — Discrete Semiconductors

STF33N65M2 STMicro N-Ch 650V 24A TO-220FP MOSFET

MPNSTF33N65M2
Active

STMicroelectronics MDmesh M2 N-Channel MOSFET, STF33N65M2, 650V Vdss, 24A Id, 140mOhm Rds(on), TO-220-3 Full Pack, Tube.

$4.2900Ref. price · indicative, final on quote
STMicroelectronics STF33N65M2 datasheet (PDF)
PackagingTO-220-3 Full Pack
RoHSROHS3 Compliant
SeriesMDmesh™ M2
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STF33N65M2 specifications
ParameterValue
SeriesMDmesh™ M2
FET typeN-Channel
MountingThrough Hole
Drain to source voltage650 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C24A (Tc)
Power dissipation34W (Tc)
Operating temperature150°C(TJ)
PackageTube
Vgs±25V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs140mOhm @ 12A, 10V
Gate charge (Qg) (Max) @ vgs41.5 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds1790 pF @ 100 V

Product details

650V, 24A — Rds(on) at junction temperature, not 25°C

The STF33N65M2: Housed in the TO-220FP full-pack, the tab is fully isolated — no insulating pad needed between the device and the heatsink. Through-hole mounting suits point-of-load positions in PSUs, adapters, and lighting ballasts where the board is wave-soldered.

Gate charge and switching FOM

The ratio — a figure of merit for switching loss — keeps the driver current manageable; a 10 V gate driver sourcing 1 A charges the gate in about 42 ns, well within the edge rate of a typical half-bridge controller.

Thermal budget and SOA

Maximum junction temperature is 150°C, with 34 W power dissipation at the case. The TO-220FP's junction-to-case thermal path is higher than a standard TO-220 because of the full-pack moulding — budget the derating from the 25°C Rds(on) when the junction sits at 125°C, where the on-resistance roughly doubles.

Frequently asked questions

Will STF33N65M2 drop into a board designed for STFU28N65M2?

Both share the TO-220FP footprint and same 650 V rating, but STF33N65M2 carries a lower 140 mOhm Rds(on) vs 180 mOhm, and higher 24 A continuous current vs 20 A. The pinout is identical — no board spin needed, though the thermal margin improves.