Skip to main content
Log in
NXP Semiconductors BUK7108-40AIE,118 — Discrete Semiconductors

BUK7108-40AIE,118 N-Channel MOSFET, 40V 75A, 8mOhm, AEC-Q101

MPNBUK7108-40AIE,118
End of Life

NXP BUK7108-40AIE,118, Automotive AEC-Q101 TrenchMOS N-Channel MOSFET, 40 V Vdss, 75 A Id, 8 mOhm Rds(on) at 10 V, TO-263-5 (D²Pak), -55°C to 175°C.

$0.75Ref. price · indicative, final on quote
NXP Semiconductors BUK7108-40AIE,118 datasheet (PDF)
PackagingTO-263-5, D²Pak (4 Leads + Tab), TO-263BB
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q101, TrenchMOS™
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BUK7108-40AIE,118 specifications
ParameterValue
SeriesAutomotive, AEC-Q101, TrenchMOS™
FET typeN-Channel
MountingSurface Mount
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C75A (Tc)
Power dissipation221W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageBulk
Vgs±20V
TechnologyMOSFET (Metal Oxide)
FET featureCurrent Sensing
CaseTO-263-5, D²Pak (4 Leads + Tab), TO-263BB
Vgs(th) (Max) @ id4V @ 1mA
Rds on (Max) @ id, vgs8mOhm @ 50A, 10V
Gate charge (Qg) (Max) @ vgs84 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds3140 pF @ 25 V

Product details

40 V, 75 A N-channel TrenchMOS with integrated current sense

What the 8 mOhm Rds(on) means for your BOM

Integrated current-sensing FET — no external shunt needed

A distinguishing feature of this part is the integrated current-sensing FET (marked as FET Feature: Current Sensing). This allows the designer to monitor load current by measuring the voltage across a small sense resistor in the source leg of the sense FET, eliminating the power dissipation and board area of a conventional high-current shunt resistor. For automotive loads where overcurrent detection or closed-loop current control is required, this feature simplifies the bill of materials and reduces PCB thermal stress.

Package and mounting: D²Pak (TO-263-5) with exposed tab

The part comes in a TO-263-5 (D²Pak) surface-mount package with four leads plus a large exposed drain tab (SOT-426 equivalent).

Frequently asked questions

What is the Rds(on) of BUK7108-40AIE,118?

The maximum Rds(on) is 8 mOhm at a drain current of 50 A and a gate-source voltage of 10 V.

Does BUK7108-40AIE,118 have current sensing?

Yes, the FET feature includes current sensing, which allows load current monitoring without an external high-power shunt resistor.