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STMicroelectronics STF11N50M2 — Discrete Semiconductors

STF11N50M2 N-Channel MOSFET, 500V, 530mOhm, TO-220FP

MPNSTF11N50M2
Obsolete

STMicroelectronics STF11N50M2, MDmesh™ II Plus series, N-Channel MOSFET, 500 V drain-source, 8 A continuous drain current, 530 mOhm Rds(on) at 10 V gate drive, TO-220-3 Full Pack through-hole package.

$1.4000Ref. price · indicative, final on quote
STMicroelectronics STF11N50M2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF11N50M2 specifications
ParameterValue
SeriesMDmesh™ II Plus
FET typeN-Channel
MountingThrough Hole
Drain to source voltage500 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C8A (Tc)
Power dissipation25W (Tc)
Operating temperature-55°C~150°C(TJ)
PackageTube
Vgs±25V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs530mOhm @ 4A, 10V
Gate charge (Qg) (Max) @ vgs12 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds395 pF @ 100 V

Product details

500 V N-channel MOSFET — TO-220FP package, obsolete status

On-resistance is specified at 530 mOhm maximum with 10 V gate drive. It comes in a TO-220-3 Full Pack through-hole package (TO-220FP), designed for isolated mounting without a separate insulator. The device is now classified as obsolete per ST's product lifecycle.

Switching and drive characteristics

The full-pack package eliminates the need for a mounting pad or thermal compound to ground, simplifying assembly in isolated-supply layouts.

Temperature range and design margin

Maximum power dissipation is 25 W at case temperature, so thermal management through the TO-220FP tab is still required at full load.

Sourcing reality — obsolete, available through independent channels

ST lists the STF11N50M2 as obsolete. For BOM lines that already use this device, the only sourcing path is the independent distribution and spot market.

Frequently asked questions

What is the exact replacement for STF11N50M2?

No official replacement part number is listed by ST in the available records. For a new design, look for a current-production 500 V N-channel MOSFET in TO-220FP with similar on-resistance and gate charge; parametric equivalents exist across several vendors.