Skip to main content
Log in
STMicroelectronics STP75NF68 — Discrete Semiconductors

STP75NF68 N-Channel MOSFET, 68V 80A TO-220, STripFET II

MPNSTP75NF68
Obsolete

STMicroelectronics STripFET™ II Series, N-Channel MOSFET, 68 V Vdss, 80 A Id, 14 mOhm Rds(on) at 40 A 10 V, TO-220-3, Through Hole, -55°C to 175°C.

$2.8000Ref. price · indicative, final on quote
STMicroelectronics STP75NF68 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP75NF68 specifications
ParameterValue
SeriesSTripFET™ II
FET typeN-Channel
MountingThrough Hole
Drain to source voltage68 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C80A (Tc)
Power dissipation190W (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, vgs14mOhm @ 40A, 10V
Gate charge (Qg) (Max) @ vgs75 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds2550 pF @ 25 V

Product details

68 V, 80 A N-channel — the conduction-loss anchor

The STP75NF68 is an STMicroelectronics STripFET™ II N-channel power MOSFET in a TO-220-3 through-hole package.

Obsolete — plan the replacement now

ST lists the STP75NF68 as Obsolete. No last-time-buy window or successor part appears in the official record. For existing BOM lines, the procurement path is the surplus and independent-distribution channel — new-old-stock or verified pulls. Any new design should select a current-production N-channel MOSFET in TO-220 with similar or better Rds(on) and voltage rating.

The 68 V Vdss gives 13.6 % derating on a nominal 48 V bus and about 30 % on a 48 V battery charger output. If your rail is 60 V nominal, this part is marginal — look for an 80 V or 100 V device. The 80 A continuous rating is a package-and-silicon limit at 25°C case; at 100°C case temperature the current must be derated per the datasheet SOA curve (not reproduced here). The 14 mOhm Rds(on) at 10 V gate drive means about 0.56 W conduction loss at 40 A — manageable with a small heatsink.

Frequently asked questions

Is the STP75NF68 obsolete?

Yes. STMicroelectronics lists the STP75NF68 as Obsolete. No last-time-buy or successor is recorded. For production or repair, source from independent distributors stocking new-old-stock or verified surplus.

What is a suitable replacement for STP75NF68?

No official ST successor is listed. A replacement should match or exceed the 68 V Vdss, 80 A Id, and 14 mOhm Rds(on) in a TO-220 package. Candidates from the same STripFET family or from competitors (e.g., Infineon OptiMOS, onsemi PowerTrench) with similar or lower Rds(on) at 10 V gate drive are typical cross-shopping targets. Verify pin-compatibility — TO-220 is standard.

What is the Rds(on) of STP75NF68?

The maximum Rds(on) is 14 mOhm at 40 A drain current and 10 V gate drive.