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NXP Semiconductors BUK7E3R1-40E,127 — Discrete Semiconductors

BUK7E3R1-40E,127 Nexperia N-Channel MOSFET

MPNBUK7E3R1-40E,127
End of Life

Nexperia BUK7E3R1-40E,127 N-Channel TrenchMOS™ MOSFET, 40V Vdss, 100A continuous drain, 3.1mOhm Rds(on) at 10V, AEC-Q101 qualified automotive grade, through-hole I2PAK package, active lifecycle.

$0.7Ref. price · indicative, final on quote
PackagingI2PAK
SeriesTrenchMOS™
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BUK7E3R1-40E,127 specifications
ParameterValue
SeriesTrenchMOS™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C100A (Tc)
Power dissipation234W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
GradeAutomotive
PackageBulk
Vgs±20V
TechnologyMOSFET (Metal Oxide)
QualificationAEC-Q101
Vgs(th) (Max) @ id4V @ 1mA
Rds on (Max) @ id, vgs3.1mOhm @ 25A, 10V
Gate charge (Qg) (Max) @ vgs79 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds6200 pF @ 25 V

Product details

With a maximum Rds(on) of 3.1 mOhm at 25 A gate-driven to 10 V, it targets high-efficiency switching in automotive power distribution, DC-DC converters, motor pre-drive stages, and reverse-battery protection circuits. The through-hole I2PAK package handles the 234 W power dissipation budget required in engine bay and chassis-domain environments.

This part carries an Automotive grade designation and is AEC-Q101 qualified, which means it meets the stress test and reliability requirements for automotive applications including under-hood and transmission-attached modules. The qualification documentation supports PPAP submission for Tier-1 and OEM programs.

3.1 mOhm Rds(on) — the switching loss trade-off

The 79 nC typical gate charge at 10 V means the driver must deliver a 79 nC pulse per switching cycle; pair this with a gate driver rated for at least 2 A peak to keep transition times under 50 ns at 100 A.

The I2PAK (TO-262) through-hole package suits designs where a heatsink is mounted directly to the device tab, common in automotive power modules. The through-hole leads handle the 100 A continuous drain current when the tab is properly heat-sunk to the PCB or chassis.

Frequently asked questions

Is BUK7E3R1-40E automotive qualified?

Yes, the part is listed with an Automotive grade and is AEC-Q101 qualified. It is suitable for use in automotive applications requiring PPAP documentation.