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STMicroelectronics STD12N65M5 — Discrete Semiconductors

STD12N65M5 N-Channel MOSFET, 650V, 8.5A, 430mOhm, MDmesh V

MPNSTD12N65M5
Obsolete

STMicroelectronics MDmesh™ V series, N-Channel MOSFET, 650 V drain-source, 8.5 A continuous drain current, 430 mOhm on-resistance at 10 V gate drive, DPAK surface-mount package.

STMicroelectronics STD12N65M5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD12N65M5 specifications
ParameterValue
SeriesMDmesh™ V
FET typeN-Channel
MountingSurface Mount
Drain to source voltage650 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C8.5A (Tc)
Power dissipation70W (Tc)
Operating temperature150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±25V
TechnologyMOSFET (Metal Oxide)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Vgs(th) (Max) @ id5V @ 250µA
Rds on (Max) @ id, vgs430mOhm @ 4.3A, 10V
Gate charge (Qg) (Max) @ vgs22 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds900 pF @ 100 V

Product details

650 V, 8.5 A N-channel — MDmesh V generation

The 22 nC typical gate charge (Qg at 10 V) keeps switching losses manageable in hard-switched topologies.

The gate threshold voltage (Vgs(th)) maxes at 5 V at 250 µA, so a 10 V drive rail gives solid overdrive and keeps conduction losses in check. Input capacitance (Ciss) is 900 pF at 100 V drain bias, which together with the 22 nC gate charge means a standard gate driver IC can switch it cleanly without excessive drive current.

For new designs, ST's current MDmesh series (e.g., MDmesh M6 or DK5) offers pin-compatible options with lower Rds(on) and similar voltage ratings — check the latest ST portfolio for a drop-in candidate.

Frequently asked questions

Is the STD12N65M5 obsolete?

Yes, the STD12N65M5 is listed as Obsolete by STMicroelectronics. No direct replacement part number has been issued. For ongoing production, evaluate a current-generation MDmesh device with similar voltage and current ratings.

Where can I buy the STD12N65M5?

Submit an RFQ for current availability and pricing — each quote is confirmed at order time.