Skip to main content
STMicroelectronics STD12NM50N — Discrete Semiconductors

STD12NM50N N-Channel MOSFET, 500 V, 11 A, DPAK

MPNSTD12NM50N
Obsolete

STMicroelectronics STD12NM50N, MDmesh™ II, N-Channel MOSFET, 500 V drain-source, 11 A continuous drain, 380 mOhm Rds(on) at 10 V, DPAK surface-mount package.

$1.6417Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD12NM50N specifications
ParameterValue
SeriesMDmesh™ II
FET typeN-Channel
MountingSurface Mount
Drain to source voltage500 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C11A (Tc)
Power dissipation100W (Tc)
Operating temperature150°C (TJ)
PackageTape & Reel (TR)
Vgs±25V
TechnologyMOSFET (Metal Oxide)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs380mOhm @ 5.5A, 10V
Gate charge (Qg) (Max) @ vgs30 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds940 pF @ 50 V

Product details

500 V N-Channel MOSFET in DPAK — MDmesh II

The MDmesh II structure provides fast switching with reduced gate charge — 30 nC typical at 10 V — and a low on-resistance of 380 mOhm at 5.5 A, 10 V gate drive.

Key ratings for the switching design

The 500 V drain-source rating places this MOSFET in the high-voltage class for off-line flyback and forward converters, PFC stages, and two-switch topologies. Gate charge of 30 nC at 10 V keeps switching losses moderate for a 500 V device, easing gate-drive design in the 50–150 kHz range. Input capacitance of 940 pF at 50 V drain-source is typical for this voltage class and sets the drive current requirement for a given rise time.

Frequently asked questions

What is the replacement for STD12NM50N?

For a pin-compatible alternative, evaluate other 500 V N-channel MOSFETs in DPAK from STMicroelectronics' MDmesh series or equivalent families from competitors, verifying Rds(on), gate charge, and thermal ratings against your design.

What is the Rds(on) of STD12NM50N?

The maximum on-resistance is 380 mOhm at 5.5 A drain current with 10 V gate drive.

Where can I buy STD12NM50N?

Submit an RFQ for current availability and pricing; quotes are confirmed at order time.