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STMicroelectronics STF20NF06L — Discrete Semiconductors

STF20NF06L N-Channel MOSFET, 60V 20A, 70 mOhm, STripFET II

MPNSTF20NF06L
Obsolete

STMicroelectronics STripFET™ II, N-Channel MOSFET, 60 V Drain-Source, 20 A Continuous Drain, 70 mOhm Rds(on) at 10 V, TO-220-3 Full Pack, Through Hole, -55 to 175 °C.

STMicroelectronics STF20NF06L datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STF20NF06L specifications
ParameterValue
SeriesSTripFET™ II
FET typeN-Channel
MountingThrough Hole
Drain to source voltage60 V
Drive voltage (Max rds on, min rds on)5V, 10V
Current - continuous drain (Id) @ 25°C20A (Tc)
Power dissipation28W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±18V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs70mOhm @ 10A, 10V
Gate charge (Qg) (Max) @ vgs7.5 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds400 pF @ 25 V

Product details

60 V, 20 A N-channel — the switching envelope

The STF20NF06L N-channel MOSFET from the STripFET II series is rated for 60 V drain-source and 20 A continuous drain current.

175 °C junction — built for hot environments

The TO-220FP full-pack package isolates the tab electrically — no insulating pad needed against the heatsink, which simplifies mounting in tight enclosures.

Total gate charge at 10 V is 7.5 nC, and input capacitance at 25 V drain-source is 400 pF. These numbers are low enough that a standard gate driver or even a microcontroller GPIO with a series resistor can drive the gate into hard saturation at moderate switching frequencies — no dedicated driver IC required for many load-switching or low-frequency PWM applications.

ST lists the STF20NF06L as obsolete.

Frequently asked questions

What is the Rds(on) of STF20NF06L?

The maximum Rds(on) is 70 mOhm at 10 A drain current with 10 V gate drive. A lower on-resistance of approximately 60 mOhm typical can be expected at 10 V, but the 70 mOhm ceiling is the design limit for thermal budgeting.

What is the Vgs threshold of STF20NF06L?

The maximum gate threshold voltage is 4 V at 250 µA drain current. This means the part is fully enhanced with a 5 V gate drive, but a 3.3 V logic signal may not reliably turn it on — use a 5 V or 10 V gate driver for guaranteed saturation.