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STMicroelectronics STP5NB40 — Discrete Semiconductors

STP5NB40 N-Channel Power MOSFET, 400 V, 4.7 A, TO-220

MPNSTP5NB40
Obsolete

STMicroelectronics PowerMESH™ series, N-Channel MOSFET, 400 V Vdss, 4.7 A Id, 1.8 Ohm Rds(on) @ 10 V, TO-220-3 through-hole package, 150°C junction temperature.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP5NB40 specifications
ParameterValue
SeriesPowerMESH™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage400 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C4.7A (Tc)
Power dissipation80W (Tc)
Operating temperature150°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id5V @ 250µA
Rds on (Max) @ id, vgs1.8Ohm @ 2.3A, 10V
Gate charge (Qg) (Max) @ vgs20 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds405 pF @ 25 V

Product details

400 V PowerMESH™ N-channel in a TO-220

The STP5NB40: The 1.8 Ohm maximum on-resistance is specified at 10 V gate drive with 2.3 A drain current. Gate charge totals 20 nC at 10 V.

Buyers should qualify any alternate part for form, fit, and function before committing a board spin.

Frequently asked questions

Is STP5NB40 obsolete?

Yes, the STP5NB40 is listed as Obsolete. It is no longer manufactured by STMicroelectronics.

What is the replacement for STP5NB40?

A functionally similar 400 V N-channel MOSFET in a TO-220 package from the same or another manufacturer would need to be evaluated for gate drive voltage, Rds(on), and switching performance before substitution.

Where can I buy STP5NB40?

Submit an RFQ to confirm current availability and pricing — no stock count or lead-time number is published here.