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AUIRF1404ZS

AUIRF1404ZS MOSFET N-Ch 40V 160A D2PAK, 3.7 mOhm Rds(on)

MPNAUIRF1404ZS
Active

Infineon HEXFET® N-Channel MOSFET, AUIRF1404ZS, 40V, 160A, 3.7 mOhm Rds(on) @ 75A/10V, 150 nC gate charge, 200W, D2PAK, Surface Mount.

$1.41Ref. price · indicative, final on quote
Infineon Technologies AUIRF1404ZS datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AUIRF1404ZS specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingSurface Mount
Operating temperature high-55°C to 175°C(TJ)
Vgs±20 V
Power200.0
Package_typeBulk
Capacitance_uf0.0043
StatusActive
Supply voltage40.0
Vgs(Th) (Max) @ id4 V @ 250µA
Switching current160.0
Rds on (Max) @ id, vgs3.7mOhm @ 75 A, 10 V
Gate charge (Qg) (Max) @ vgs150 nC @ 10 V

Product details

The AUIRF1404ZS is an Infineon HEXFET N-channel MOSFET rated at 40 V drain-source with a continuous drain current of 160 A. The on-resistance is specified at 3.7 mOhm maximum at Vgs=10 V and Id=75 A — this sets the conduction loss floor in a 40 V bus application. With a total gate charge of 150 nC at Vgs=10 V, the driver must supply the required peak current for the switching frequency; lower frequencies relax the drive current proportionally.

175°C junction — under-hood and high-ambient designs

The 200 W power dissipation rating assumes the D2PAK package is soldered to a suitable copper area on the PCB — the thermal resistance to ambient depends on the board's copper pour and airflow, not just the device itself.

Frequently asked questions

What is the Rds(on) of AUIRF1404ZS?

The maximum Rds(on) is 3.7 mOhm at Vgs=10 V and Id=75 A. This value is measured at 25°C junction temperature; on-resistance increases with temperature per the normalised curve in the datasheet.

What is the gate charge of AUIRF1404ZS?

Total gate charge (Qg) is 150 nC at Vgs=10 V. This figure drives the gate-driver peak current requirement — for example, 150 nC switched at 100 kHz needs an average drive current of 15 mA, though peak current during the Miller plateau is higher.

What is the difference between AUIRF1404ZS and AUIRF1404Z?

The 'S' suffix in AUIRF1404ZS indicates the part is supplied in bulk (tube or loose) packaging rather than tape-and-reel. The die, package (D2PAK), and electrical ratings are identical. The AUIRF1404Z is typically offered on tape-and-reel for automated pick-and-place.