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STMicroelectronics STP120NF04 — Discrete Semiconductors

STP120NF04 N-Channel MOSFET, 40V 120A TO-220, Obsolete

MPNSTP120NF04
Obsolete

STMicroelectronics STripFET™ II STP120NF04, N-Channel MOSFET, 40V Vdss, 120A Id, 5 mOhm Rds(on) @ 10V, TO-220-3, -55°C to 175°C.

$1.8000Ref. price · indicative, final on quote
STMicroelectronics STP120NF04 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP120NF04 specifications
ParameterValue
SeriesSTripFET™ II
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 dissipation300W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4.5V @ 250µA
Rds on (Max) @ id, vgs5mOhm @ 50A, 10V
Gate charge (Qg) (Max) @ vgs150 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds5100 pF @ 25 V

Product details

40 V, 120 A N-channel — obsolete but still in demand

Obsolete — plan for a replacement

STMicroelectronics lists the STP120NF04 as Obsolete. This means the manufacturer no longer produces the part, and no last-time-buy window remains open.

The 120 A continuous drain rating is a package-limited figure at 25°C case temperature; real-world derating applies as junction temperature rises. The 40 V Vdss gives about 20% headroom on a 24 V nominal rail, but on a 36 V bus the margin is tight — verify avalanche ruggedness if inductive loads are present. Gate charge of 150 nC at 10 V means the driver must source enough peak current to switch cleanly at the target frequency.

Frequently asked questions

Is STP120NF04 obsolete?

Yes, STMicroelectronics lists the STP120NF04 as Obsolete. No further production is planned. The part is available only through independent surplus and broker channels.

What is the replacement for STP120NF04?

STMicroelectronics does not list a direct official replacement for the STP120NF04. For new designs, select a current-production N-channel MOSFET in a TO-220 package with a 40 V or higher Vdss, continuous drain current of 120 A or higher, and Rds(on) at or below 5 mOhm at 10 V gate drive. Many modern STripFET™ F7 or similar series parts offer improved switching performance.