Skip to main content
Log in
STMicroelectronics STP14N80K5 — Discrete Semiconductors

STP14N80K5 N-Channel MOSFET, 800V, 12A, TO-220-3

MPNSTP14N80K5
Active

STMicroelectronics MDmesh™ K5 series, STP14N80K5, N-Channel MOSFET, 800V Vdss, 12A Id @ 25°C, 445mOhm Rds(on) @ 6A 10V, 22nC Qg, TO-220-3, -55°C to 150°C.

$1.9329Ref. price · indicative, final on quote
STMicroelectronics STP14N80K5 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STP14N80K5 specifications
ParameterValue
SeriesMDmesh™ K5
FET typeN-Channel
MountingThrough Hole
Drain to source voltage800 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C12A (Tc)
Power dissipation130W (Tc)
Operating temperature-55°C ~ 150°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id5V @ 100µA
Rds on (Max) @ id, vgs445mOhm @ 6A, 10V
Gate charge (Qg) (Max) @ vgs22 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds620 pF @ 100 V

Product details

800 V N-Channel MOSFET with MDmesh K5 technology

The 22 nC typical gate charge keeps switching losses manageable in hard-switched topologies.

What the 445 mOhm Rds(on) means for your BOM

At 6 A, dissipation in the channel alone is roughly 16 W, which combined with switching losses must stay within the 130 W package limit. The 10 V drive voltage is the sweet spot for minimum Rds(on); driving with a lower gate voltage increases resistance and losses, so budget a 10 V gate supply or a bootstrap circuit in the gate driver stage.

22 nC gate charge — switching speed and drive loss

A total gate charge of 22 nC at 10 V means the gate driver sees a modest capacitive load, keeping drive losses low even at higher switching frequencies. The 620 pF input capacitance at 100 V Vds confirms a relatively small Miller plateau, which helps maintain clean switching edges and reduces dead-time requirements in half-bridge configurations.

Frequently asked questions

What is the closest pin-compatible alternative to STP14N80K5?

The STP14N80K4 is a near-equivalent in the same MDmesh K5 family, sharing the same TO-220-3 footprint and 800 V rating, but with a slightly different Rds(on) and current rating. Check the specific parametric differences against your load current and thermal budget before substituting.