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Infineon Technologies IRFH7440TRPBF

IRFH7440TRPBF N-Channel MOSFET, 40 V, 85 A, 2.4 mOhm

MPNIRFH7440TRPBF
End of Life

Infineon IRFH7440TRPBF, HEXFET® StrongIRFET™, N-Channel MOSFET, 40 V Vdss, 85 A Id, 2.4 mOhm Rds(on) at 10 V, 138 nC Qg, 8-PowerTDFN (PQFN 5x6), -55 to 150 °C.

$1.57Ref. price · indicative, final on quote
Infineon Technologies IRFH7440TRPBF datasheet (PDF)
Packaging8-PowerTDFN
RoHSROHS3 Compliant
SeriesHEXFET®, StrongIRFET™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFH7440TRPBF specifications
ParameterValue
SeriesHEXFET®, StrongIRFET™
FET typeN-Channel
MountingSurface Mount
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)6V, 10V
Current - continuous drain (Id) @ 25°C85A (Tc)
Power dissipation104W (Tc)
Operating temperature-55°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
Case8-PowerTDFN
Vgs(th) (Max) @ id3.9V @ 100µA
Rds on (Max) @ id, vgs2.4mOhm @ 50A, 10V
Gate charge (Qg) (Max) @ vgs138 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds4574 pF @ 25 V

Product details

40 V, 85 A N-channel — conduction loss floor at 2.4 mOhm

Gate charge totals 138 nC at 10 V, which determines the driver current needed for the target switching frequency.

Thermal and package — 104 W through the exposed pad

The 0.50 mm pitch of the PQFN-8 demands a solder-paste stencil aperture sized for the pad geometry — a standard reflow profile for lead-free solder applies.

Gate drive and switching — not a logic-level part

The gate threshold voltage is 3.9 V maximum at 100 µA drain current, and the drive voltage range for achieving minimum on-resistance is 6 V to 10 V.

Frequently asked questions

What is the maximum drain current of the IRFH7440TRPBF?

The continuous drain current rating is 85 A at 25 °C case temperature.

Is the IRFH7440TRPBF a logic-level MOSFET?

No — the gate threshold voltage is 3.9 V maximum, and the recommended drive voltage for minimum on-resistance is 6 V to 10 V.