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STMicroelectronics STP7NK40Z — Discrete Semiconductors

STMicroelectronics STP7NK40Z N-Channel MOSFET

MPNSTP7NK40Z
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STMicroelectronics STP7NK40Z, SuperMESH™ Series, N-Channel MOSFET, 400V Vdss, 5.4A Id, 1Ω Rds(on) @ 2.7A, 10V, 26nC Qg, TO-220-3, -55°C to 150°C.

$1.8100Ref. price · indicative, final on quote
STMicroelectronics STP7NK40Z datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesSuperMESH™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STP7NK40Z specifications
ParameterValue
SeriesSuperMESH™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage400 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C5.4A (Tc)
Power dissipation70W (Tc)
Operating temperature-55°C ~ 150°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4.5V @ 50µA
Rds on (Max) @ id, vgs1Ohm @ 2.7A, 10V
Gate charge (Qg) (Max) @ vgs26 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds535 pF @ 25 V

Product details

400 V N-channel MOSFET — SuperMESH™ for offline switching

The STMicroelectronics STP7NK40Z is a 400 V, 5.4 A N-channel power MOSFET built on the SuperMESH™ technology platform.

At 2.7 A and 10 V gate drive, the STP7NK40Z exhibits a maximum on-resistance of 1 Ohm.

Through-hole TO-220 — field-service and prototyping fit

The TO-220-3 package (Supplier Device Package TO-220) is a through-hole footprint with a screw-mounting hole in the tab. It accepts a standard M3 screw for heatsink attachment. The through-hole form factor simplifies hand-soldering, rework, and field replacement — a practical choice for low-to-mid volume production, prototyping, and maintenance spares where surface-mount reflow is not available.

The base product number is STP7NK40; the 'Z' suffix indicates the SuperMESH™ generation.

Frequently asked questions

Is STP7NK40Z RoHS compliant?

Yes, the STP7NK40Z is ROHS3 compliant.

What is the equivalent of STP7NK40Z?

No official pin-compatible second-source alternate is recorded in the manufacturer's cross-reference. The TO-220-3 footprint is standard for 400 V N-channel MOSFETs, but any substitution requires verifying the gate threshold, Rds(on), gate charge, and safe operating area against the STP7NK40Z's ratings.