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STMicroelectronics STP270N04 — Discrete Semiconductors

STP270N04 STripFET N-Channel MOSFET, 40 V, 120 A, TO-220

MPNSTP270N04
Obsolete

STMicroelectronics STP270N04, STripFET™ Series, N-Channel MOSFET, 40 V Vdss, 120 A Id, 2.9 mOhm Rds(on) at 10 V, TO-220-3, Through Hole, -55°C to 175°C.

STMicroelectronics STP270N04 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP270N04 specifications
ParameterValue
SeriesSTripFET™
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

40 V, 120 A N-channel in a TO-220 — what the ratings mean

That Rds(on) figure is the one that matters for conduction loss in a high-current switching regulator, motor-drive half-bridge, or battery-isolation switch — at 80 A the dissipation stays under 19 W, which the TO-220 package can sink with a decent heatsink.

The STP270N04 is marked Obsolete by STMicroelectronics.

Package and mounting — TO-220 through-hole

The tab is electrically connected to the drain, so an insulating pad and thermal compound are needed if the heatsink is grounded.

Frequently asked questions

What is the replacement for STP270N04?

A pin-compatible substitute should match the 40 V Vdss, 120 A Id rating, and TO-220 package, with similar or lower Rds(on) and gate charge. Evaluate candidates on parametric fit for the specific switching application.