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STMicroelectronics STP80N70F4 — Discrete Semiconductors

STP80N70F4 MOSFET, N-Channel 68V 85A TO-220-3

MPNSTP80N70F4
Obsolete

STMicroelectronics STP80N70F4, DeepGATE™ STripFET™ N-Channel MOSFET, 68V Vdss, 85A continuous drain, 9.8mOhm Rds(on) at 40A 10V, TO-220-3 through-hole, -55°C to 175°C junction.

$2.9200Ref. price · indicative, final on quote
STMicroelectronics STP80N70F4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP80N70F4 specifications
ParameterValue
SeriesDeepGATE™, STripFET™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage68 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C85A (Tc)
Power dissipation150W (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, vgs9.8mOhm @ 40A, 10V
Gate charge (Qg) (Max) @ vgs90 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds5600 pF @ 25 V

Product details

That low resistance keeps conduction losses down in high-current paths, which is the headline spec when you are sizing the heatsink or estimating efficiency. The drive voltage required for the lowest Rds(on) is 10 V, so this part expects a gate drive rail above the logic level — typical for a 12 V bus or a dedicated gate-driver IC.

Gate charge and input capacitance — switching speed budget

These numbers tell you the gate-driver needs to source and sink enough peak current to hit your switching frequency without excessive crossover loss. A 90 nC Qg is moderate — a standard totem-pole driver handles it, but a 1 A driver will be slower than a 4 A one at the turn-on edge.

Frequently asked questions

Is STP80N70F4 obsolete?

Yes, STMicroelectronics has listed the STP80N70F4 as Obsolete. There is no official successor part, so sourcing relies on the surplus and broker channel.

What is the best replacement for STP80N70F4?

No official replacement is listed by STMicroelectronics. For a pin-compatible substitute, look for an N-channel MOSFET in a TO-220-3 package with a 68 V or higher Vdss, similar current rating (85 A or higher), and comparable Rds(on) around 10 mOhm. Parts from the same STripFET family or competitors' offerings (e.g., Infineon OptiMOS, onsemi) may fit, but verify the gate charge and drive voltage requirements against your design.