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STMicroelectronics STF17N62K3 — Discrete Semiconductors

STF17N62K3 N-Channel MOSFET, 620 V, 15.5 A, TO-220FP

MPNSTF17N62K3
Obsolete

STMicroelectronics SuperMESH3™ STF17N62K3, N-Channel MOSFET, 620 Vdss, 15.5 A continuous drain, 340 mOhm Rds(on) at 10 V, TO-220-3 Full Pack through-hole package.

$5.4800Ref. price · indicative, final on quote
STMicroelectronics STF17N62K3 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF17N62K3 specifications
ParameterValue
SeriesSuperMESH3™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage620 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C15.5A (Tc)
Power dissipation40W (Tc)
Operating temperature150°C(TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id4.5V @ 100µA
Rds on (Max) @ id, vgs340mOhm @ 7.5A, 10V
Gate charge (Qg) (Max) @ vgs105 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds3100 pF @ 50 V

Product details

620 V, 15.5 A N-channel MOSFET in TO-220FP — SuperMESH3™ series

The STMicroelectronics STF17N62K3 is a 620 V, 15.5 A N-channel power MOSFET from the SuperMESH3™ family, built with a metal-oxide semiconductor structure. The part is designed for high-voltage switching applications such as off-line power supplies, adapters, and lighting ballasts where the 620 V drain-source breakdown voltage gives adequate derating for universal-input (85–265 VAC) flyback or forward converters.

Rds(on) and gate drive — 340 mOhm at 10 V

Maximum on-resistance is 340 mOhm at a drain current of 7.5 A with 10 V gate drive. Gate charge is 105 nC at 10 V, which is moderate for this voltage class — a gate-drive IC capable of sourcing at least 1 A peak will keep switching losses under control at frequencies up to about 100 kHz. Input capacitance is 3100 pF at 50 V drain-source, a figure to include in the gate-drive power budget.

Obsolete — no official successor on record

Sourcing is limited to independent distribution and surplus inventory — we can quote against an RFQ from our multi-source network. Buyers should verify stock and pricing at the time of inquiry, as availability is batch-dependent.

Frequently asked questions

Can I use STF17N62K3 as a replacement for STP17N62K3?

The STP17N62K3 is the standard TO-220 version (non-isolated tab) of the same die. The STF17N62K3 has a fully isolated TO-220FP package, so the electrical ratings are similar, but the thermal resistance and mounting method differ. They are not drop-in replacements — the package footprint and heatsinking approach must be evaluated. Check the respective datasheets for thermal and mechanical compatibility.