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STMicroelectronics STP14NF12 — Discrete Semiconductors

STP14NF12 N-Channel MOSFET, 120 V, 14 A, STripFET II, TO-220

MPNSTP14NF12
Obsolete

STMicroelectronics STP14NF12, STripFET™ II, N-Channel MOSFET, 120 V Vdss, 14 A Id, 180 mOhm Rds(on) at 10 V, 21 nC Qg, TO-220-3 through hole, -55 to 175 °C.

$2.7400Ref. price · indicative, final on quote
STMicroelectronics STP14NF12 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP14NF12 specifications
ParameterValue
SeriesSTripFET™ II
FET typeN-Channel
MountingThrough Hole
Drain to source voltage120 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C14A (Tc)
Power dissipation60W (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, vgs180mOhm @ 7A, 10V
Gate charge (Qg) (Max) @ vgs21 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds460 pF @ 25 V

Product details

120 V, 14 A N-channel — where this part fits

The STP14NF12 is a 120 V, 14 A N-channel power MOSFET from STMicroelectronics' STripFET™ II series, built with a planar stripe technology that keeps gate charge low at 21 nC (typical at 10 V).

Any stock you find today is what remains in the channel; there will be no last-time-buy window because the obsolescence has already occurred.

Gate charge and switching — what 21 nC means

With a typical gate charge of 21 nC at 10 V, the STP14NF12 is a relatively light load for a gate driver. A 1 A gate driver can charge the gate in about 21 ns, which keeps switching losses low in a 100 kHz SMPS or DC-DC converter. If you are replacing this part in an existing design, the low Qg means you can often keep the same gate-drive circuit.

Temperature range — -55 to 175 °C junction

The threshold voltage (Vgs(th)) is specified at 4 V maximum with 250 µA drain current, so a 10 V gate drive is the safe choice for full enhancement — 5 V logic-level drive may not fully turn it on, as the Rds(on) is characterized at 10 V.

Frequently asked questions

What is a direct replacement for STP14NF12?

For a pin-compatible substitute, look for an N-channel MOSFET in TO-220-3 with similar ratings: 120 V Vdss, 14 A Id, 180 mOhm Rds(on) max, and a gate charge around 21 nC. Parts from the same STripFET II family with higher current ratings may fit the footprint but verify the gate drive voltage and thermal performance. Submit an RFQ for cross-reference assistance.

What is the cross reference for STP14NF12 to other MOSFETs?

No official cross-reference is recorded for STP14NF12. For parametric equivalents, look for an N-channel MOSFET in TO-220 with 120 V Vdss, 14 A Id, and 180 mOhm Rds(on). Parts from the STP14N base number family (e.g., STP14NF10, STP14NF15) share the same package and similar current rating but differ in voltage — verify the drain-source voltage rating for your application.