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STMicroelectronics STP17N80K5 — Discrete Semiconductors

STP17N80K5 N-Channel MOSFET, 800 V, 14 A, TO-220-3

MPNSTP17N80K5
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STMicroelectronics MDmesh™ K5 series N-Channel MOSFET, STP17N80K5, 800 V drain-source voltage, 14 A continuous drain current, 340 mOhm on-resistance at 10 V, 26 nC gate charge, TO-220-3 through-hole package, -55°C to 150°C junction temperature.

$2.8884Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STP17N80K5 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°C14A (Tc)
Power dissipation170W (Tc)
Operating temperature-55°C~150°C(TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id5V @ 250µA
Rds on (Max) @ id, vgs340mOhm @ 7A, 10V
Gate charge (Qg) (Max) @ vgs26 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds866 pF @ 100 V

Product details

At lower gate voltages the on-resistance rises significantly — the 5 V threshold maximum means you need the full 10 V drive to guarantee the rated Rds(on). Input capacitance of 866 pF at 100 V Vds confirms the switching node capacitance is manageable for a standard gate-driver IC.

For a BOM planner, this removes the risk of a sudden obsolescence-driven redesign during the product's expected production run.

Package and thermal handling — TO-220-3

The TO-220-3 through-hole package is a standard vertical-mount power package. Maximum power dissipation is 170 W at case temperature, which assumes a proper heatsink with thermal interface material. For a rework or repair scenario, the through-hole leads are straightforward to solder and desolder with a standard iron or hot-air station.

Frequently asked questions

What is the on-resistance of STP17N80K5 at 10 V?

The maximum on-resistance is 340 mOhm at 7 A drain current with 10 V gate drive.

What is the closest pin-compatible alternative to STP17N80K5 in this component family?

The STP17N80K5 is part of the MDmesh K5 series. Within the same 800 V, TO-220 family, parts like the STP14N80K5 or STP20N80K5 offer different current ratings but share the same pinout and package. Verify the specific current and Rds(on) requirements against your design before substituting.