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STMicroelectronics STF7N52DK3 — Discrete Semiconductors

STF7N52DK3 N-Channel MOSFET, 525 V, 6 A, TO-220FP, Obsolete

MPNSTF7N52DK3
Obsolete

STMicroelectronics SuperFREDmesh3™ N-channel MOSFET, 525 V drain-source, 6 A continuous drain, 1.15 Ohm Rds(on) at 10 V gate drive, TO-220-3 Full Pack through-hole package.

$1.3900Ref. price · indicative, final on quote
STMicroelectronics STF7N52DK3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF7N52DK3 specifications
ParameterValue
SeriesSuperFREDmesh3™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage525 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C6A (Tc)
Power dissipation25W (Tc)
Operating temperature150°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id4.5V @ 50µA
Rds on (Max) @ id, vgs1.15Ohm @ 3A, 10V
Gate charge (Qg) (Max) @ vgs33 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds870 pF @ 50 V

Product details

The STF7N52DK3 is an N-channel MOSFET in a TO-220-3 Full Pack package.

Obsolete — planning the BOM transition

ST has marked the STF7N52DK3 obsolete. For a board in production, the BOM line needs a pin-compatible swap or a redesign around a current-production part. The TO-220FP footprint is common, so a drop-in from another vendor is possible if the gate charge and Rds(on) align.

Gate charge and switching — what the 33 nC buys you

Total gate charge is 33 nC at 10 V. Input capacitance is 870 pF at 50 V drain-source.

Where the 525 V rating lands it

The 525 V Vdss suits offline applications. The 6 A continuous rating at 25 °C case derates with temperature.

Frequently asked questions

Is STF7N52DK3 obsolete?

Yes. ST has listed the STF7N52DK3 as obsolete. No official replacement order code has been published. For a production board you will need to qualify a substitute or redesign the power stage around a current-production MOSFET.