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STMicroelectronics STF19NM65N — Discrete Semiconductors

STF19NM65N N-Channel MOSFET, 650 V, 15.5 A, TO-220FP

MPNSTF19NM65N
Obsolete

STMicroelectronics MDmesh™ II, N-Channel MOSFET, 650 V Drain to Source Voltage, 15.5 A Continuous Drain Current, 270 mΩ On Resistance at 10 V, TO-220-3 Full Pack Through Hole.

STMicroelectronics STF19NM65N datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF19NM65N specifications
ParameterValue
SeriesMDmesh™ II
FET typeN-Channel
MountingThrough Hole
Drain to source voltage650 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C15.5A (Tc)
Power dissipation35W (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, vgs270mOhm @ 7.75A, 10V
Gate charge (Qg) (Max) @ vgs55 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds1900 pF @ 50 V

Product details

The STF19NM65N: 650 V drain-source rating and 15.5 A continuous drain current suit flyback converters, PFC boost stages, and two-switch forward topologies.

TO-220FP full-pack — one less assembly step

The TO-220FP (full-pack) package is the through-hole, fully isolated variant — no insulating washer or thermal grease needed between the tab and the heatsink. That saves a BOM line and a pick-and-place step in manual assembly, and it eliminates the risk of a cracked washer or uneven thermal paste application. The trade-off is higher thermal resistance to the case compared to a standard TO-220 with a mica washer, so the 35 W dissipation ceiling is the practical limit for continuous operation. Mounting torque and flatness matter here — the full-pack body is thicker, and overtightening can crack the epoxy.

The STF19NM65N is listed as Obsolete. ST has moved on from this MDmesh II generation, and there is no active last-time-buy window. No stock or price figures here; send the RFQ for a real-time answer.

Frequently asked questions

What is the replacement for STF19NM65N?

The evidence does not list an official ST successor order code for the STF19NM65N. For a pin-compatible drop-in, you would need to compare the TO-220FP footprint and key parametrics (650 V Vdss, 15.5 A Id, 270 mΩ Rds(on) at 10 V) against current MDmesh M5 or MDmesh K5 series parts from ST. Without a confirmed cross-reference, the safest path is to qualify a candidate against your switching frequency, gate drive voltage, and thermal budget.

Where can I buy STF19NM65N?

The STF19NM65N is obsolete, so standard distributor stock is depleted.