Skip to main content
STMicroelectronics STB11NK40ZT4

STB11NK40ZT4 N-Channel MOSFET, 400 V, 9 A, D2PAK

MPNSTB11NK40ZT4
End of Life

STMicroelectronics SuperMESH™ N-channel MOSFET, STB11NK40ZT4, 400 V Vdss, 9 A Id, 550 mOhm Rds(on) at 10 V, 32 nC Qg, D2PAK package, -55 to 150 °C.

$2.42Ref. price · indicative, final on quote
PackagingTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
RoHSROHS3 Compliant
SeriesSuperMESH™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STB11NK40ZT4 specifications
ParameterValue
SeriesSuperMESH™
FET typeN-Channel
MountingSurface Mount
Drain to source voltage400 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C9A (Tc)
Power dissipation110W (Tc)
Operating temperature-55°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Vgs(th) (Max) @ id4.5V @ 100µA
Rds on (Max) @ id, vgs550mOhm @ 4.5A, 10V
Gate charge (Qg) (Max) @ vgs32 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds930 pF @ 25 V

Product details

400 V, 9 A, 550 mOhm — the switching load it carries

Housed in a TO-263-3 (D²Pak) surface-mount package with the tab as the drain connection. The D2PAK footprint requires a copper pad under the tab for the thermal path — the datasheet's 110 W power dissipation rating assumes that pad is soldered to a 1-inch-square copper island on a 2-layer board.

Frequently asked questions

What is the price of STB11NK40ZT4?

Buyers need cost for BOM budgeting and to compare with alternatives.

Is STB11NK40ZT4 in stock at Digikey or Mouser?

Stock availability directly impacts procurement lead time and production schedule.

What are the key specs of STB11NK40ZT4 (Vds, Id, Rds on)?

Design engineers validate fit by comparing these parameters with their circuit requirements.

What is the replacement or equivalent for STB11NK40ZT4?

Sourcing buyers and maintenance techs need drop-in substitutes if the part is scarce or EOL.

What is the pinout of STB11NK40ZT4 (D2PAK)?

Correct pin mapping prevents PCB layout errors during design or replacement.

Where can I buy STB11NK40ZT4 with fast shipping?

Production stops if parts aren't sourced quickly; buyers want the fastest reliable channel.