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STMicroelectronics STD170N4F7AG — Discrete Semiconductors

STD170N4F7AG N-Channel MOSFET, 40V, 80A, AEC-Q101, DPAK

MPNSTD170N4F7AG
Obsolete

STMicroelectronics STD170N4F7AG, N-Channel STripFET MOSFET, 40V Vdss, 80A Id, 2.8mOhm Rds(on) @ 10V, AEC-Q101 qualified, DPAK package, -55°C to 175°C junction temperature.

$1.7900Ref. price · indicative, final on quote
STMicroelectronics STD170N4F7AG datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD170N4F7AG specifications
ParameterValue
SeriesSTripFET™
FET typeN-Channel
MountingSurface Mount
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C80A (Tc)
Power dissipation172W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
GradeAutomotive
PackageTape & Reel (TR)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
QualificationAEC-Q101
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs2.8mOhm @ 40A, 10V
Gate charge (Qg) (Max) @ vgs63 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds4350 pF @ 25 V

Product details

Obsolete — what this means for the BOM line

The STD170N4F7AG is marked obsolete by STMicroelectronics. For a production BOM that already specifies this part, the procurement path is the surplus and independent-distribution channel.

Automotive-grade parametrics

Switching and drive considerations

Gate charge is 63 nC at 10V, with an input capacitance of 4350 pF at 25V Vds. The 10V drive voltage is specified for minimum Rds(on); at lower gate voltages the on-resistance climbs significantly, so a gate driver rail of at least 10V is assumed in the original design. The ±20V maximum gate-source rating provides margin for ringing on long gate traces, but a gate resistor is still advisable to damp the 4350 pF input capacitance.

Frequently asked questions

What is the replacement for STD170N4F7AG?

No official successor is recorded. A pin-compatible alternative from the same STripFET family would need to match the 40V Vdss, 80A Id, 2.8 mOhm Rds(on) at 10V, and AEC-Q101 qualification. Qualification testing is required before substituting into an existing design.