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STMicroelectronics STF9N65M2 — Discrete Semiconductors

STF9N65M2 N-Channel MOSFET, 650 V, 5 A, MDmesh, TO-220FP

MPNSTF9N65M2
Obsolete

STMicroelectronics MDmesh™ N-Channel MOSFET, STF9N65M2, 650 V Vdss, 5 A Id, 900 mOhm Rds(on) at 10 V, 10 nC Qg, TO-220-3 Full Pack (TO-220FP), Through Hole, 150°C TJ.

$1.6100Ref. price · indicative, final on quote
STMicroelectronics STF9N65M2 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF9N65M2 specifications
ParameterValue
SeriesMDmesh™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage650 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C5A (Tc)
Power dissipation20W (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, vgs900mOhm @ 2.5A, 10V
Gate charge (Qg) (Max) @ vgs10 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds315 pF @ 100 V

Product details

650 V, 5 A — what this MDmesh MOSFET brings to a power stage

Obsolete — what it means for sourcing

TO-220FP full-pack — the isolated-tab advantage

This eliminates the need for an insulating pad or washer between the device and a heatsink, simplifying assembly and reducing the BOM count. The trade-off is higher thermal resistance from junction to case, which the 20 W power dissipation rating reflects. For a flyback or PFC stage dissipating 10–15 W, the full-pack package works well with a clip-on or screw-mounted heatsink. The through-hole mounting suits boards where wave solder or hand assembly is the process.

Frequently asked questions

What is the equivalent or replacement for STF9N65M2?

A replacement would need to be a pin-compatible N-channel MOSFET in a TO-220FP package with at least 650 V Vdss and 5 A Id rating. The design team should qualify a candidate from ST's MDmesh or another vendor's equivalent series based on the gate charge and Rds(on) targets.

What are the specifications of STF9N65M2?

It comes in a TO-220FP full-pack through-hole package and operates up to 150°C junction temperature.