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STMicroelectronics STFI34N65M5 — Discrete Semiconductors

STFI34N65M5 N-Channel MOSFET, 650 V, 28 A, 110 mOhm Rds(on)

MPNSTFI34N65M5
Obsolete

STMicroelectronics STFI34N65M5, MDmesh V N-channel MOSFET, 650 V Vdss, 28 A Id, 110 mOhm Rds(on) at 14 A, TO-262 full pack (I2PAKFP), through-hole mount.

$5.5400Ref. price · indicative, final on quote
STMicroelectronics STFI34N65M5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STFI34N65M5 specifications
ParameterValue
SeriesMDmesh™ V
FET typeN-Channel
MountingThrough Hole
Drain to source voltage650 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C28A (Tc)
Power dissipation35W (Tc)
Operating temperature150°C (TJ)
PackageTube
Vgs±25V
TechnologyMOSFET (Metal Oxide)
CaseTO-262-3 Full Pack, I²Pak
Vgs(th) (Max) @ id5V @ 250µA
Rds on (Max) @ id, vgs110mOhm @ 14A, 10V
Gate charge (Qg) (Max) @ vgs62.5 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds2700 pF @ 100 V

Product details

The input capacitance is 2700 pF at 100 V drain bias, which influences the Miller plateau duration and the switching loss profile.

Package and thermal — I2PAKFP full-pack isolation

The TO-262 full-pack (I2PAKFP) through-hole package provides full isolation between the die and the heatsink — no insulating pad is needed, simplifying assembly. The through-hole mounting suits designs where vibration resistance and manual rework are priorities over board density.

Lifecycle — officially obsolete

Buyers should verify the remaining shelf stock and consider qualifying a pin-compatible alternative if the design allows.

Frequently asked questions

What is the Rds(on) of the STFI34N65M5?

This is the on-resistance at 25 °C junction temperature; it increases with temperature per the normalised curve in the datasheet.

Is the STFI34N65M5 obsolete?

Yes, STMicroelectronics lists the STFI34N65M5 as obsolete. No direct factory replacement is published. The part is available through surplus and broker channels for production support or repair.