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Infineon Technologies AUIRFS8408TRR — Discrete Semiconductors
Infineon Technologies

AUIRFS8408TRR MOSFET N-CH 40V 195A D2PAK, AEC-Q101

MPNAUIRFS8408TRR
Active

Infineon HEXFET series, N-Channel MOSFET, 40 V drain-source, 195 A continuous drain, 1.6 mOhm Rds(on) at 10 V, 324 nC gate charge, D2PAK (TO-263) surface mount, -55°C to 175°C junction temperature, AEC-Q101 qualified.

$1.29Ref. price · indicative, final on quote
AUIRFS8408TRR datasheet
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MOQ1 pcs
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Specifications

AUIRFS8408TRR Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q101, HEXFET®
FET typeN-Channel
Mounting_typeSurface Mount
Operating temperature high-55°C to 175°C(TJ)
Vgs±20 V
Power_w294.0
Package_typeBulk
Capacitance_uf0.0108
Product_statusActive
Supply_voltage_v40.0
Vgs(Th) (Max) @ id3.9 V @ 250µA
Switching_current_a195.0
Rds on (Max) @ id, vgs1.6mOhm @ 100 A, 10 V
Gate charge (Qg) (Max) @ vgs324 nC @ 10 V

Product details

40 V, 1.6 mOhm — the load-switch and motor-drive FET

The Infineon AUIRFS8408TRR is an N-channel HEXFET power MOSFET in a D2PAK (TO-263) surface-mount package, rated for 40 V drain-source and 195 A continuous drain current. The headline figure is the 1.6 mOhm maximum on-resistance at 100 A with 10 V gate drive — this is the conduction-loss floor that determines the copper pour area on the PCB and the heatsinking needed to stay inside the 175°C junction temperature rating. Part of the Automotive HEXFET series, it carries AEC-Q101 qualification.

Gate charge Qg is 324 nC at 10 V.

175°C junction — the under-hood enabler

Rated junction temperature spans -55°C to 175°C.

Frequently asked questions

Is the AUIRFS8408TRR obsolete or end of life?

No.

Is the AUIRFS8408TRR suitable for automotive applications?

Yes. It is part of the Automotive HEXFET series and is AEC-Q101 qualified, which is the standard stress qualification for automotive-grade discrete semiconductors. The 175°C junction rating covers under-hood and transmission environments.

What is the maximum drain current of the AUIRFS8408TRR?

The continuous drain current is rated at 195 A. This is a package-limited figure at 25°C case temperature; actual usable current in a 125°C ambient with limited copper area will be lower and must be calculated from the thermal resistance and the Rds(on) temperature multiplier.