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STMicroelectronics STP270N4F3 — Discrete Semiconductors

STP270N4F3 STripFET™ III N-Channel MOSFET, 40 V, 120 A

MPNSTP270N4F3
Obsolete

STMicroelectronics STripFET™ III, N-Channel MOSFET, TO-220-3, 40 V Vdss, 120 A Id, 2.9 mOhm Rds(on) @ 80 A, 10 V, -55°C to 175°C.

$1.8800Ref. price · indicative, final on quote
STMicroelectronics STP270N4F3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP270N4F3 specifications
ParameterValue
SeriesSTripFET™ III
FET typeN-Channel
MountingThrough Hole
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C120A (Tc)
Power dissipation330W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs2.9mOhm @ 80A, 10V
Gate charge (Qg) (Max) @ vgs150 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds7400 pF @ 25 V

Product details

The STP270N4F3 is an N-channel MOSFET in a through-hole TO-220-3 package, rated for 40 V Vdss and 120 A Id at 25°C, with 2.9 mOhm Rds(on) at 10 V.

The STP270N4F3 is listed as obsolete. Any replacement candidate must match the 40 V / 120 A / 2.9 mOhm envelope and the TO-220 footprint — a direct pin-compatible substitute from the same STripFET™ III family is not documented, so a parametric cross-search is the practical route.

The 40 V Vdss sets the maximum off-state voltage — a replacement must not be lower. The 120 A continuous drain rating at 25°C case temperature is the thermal limit; actual current in a design depends on heatsinking and ambient, but the replacement should match or exceed this figure.

Frequently asked questions

Where can I buy STP270N4F3?

The STP270N4F3 is obsolete but can be sourced through independent distribution.

Is STP270N4F3 obsolete?

Yes, the STP270N4F3 is listed as obsolete. No official replacement part number has been published by STMicroelectronics.