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Infineon Technologies IRFB7740PBF

IRFB7740PBF StrongIRFET N-Ch 75V 87A TO-220AB MOSFET

MPNIRFB7740PBF
End of Life

Infineon StrongIRFET™, IRFB7740PBF, N-Channel MOSFET, 75V Vdss, 87A Id, 7.3mOhm Rds(on) @ 52A 10V, 122nC Qg, TO-220AB, -55°C to 175°C.

$1.66Ref. price · indicative, final on quote
Infineon Technologies IRFB7740PBF datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesStrongIRFET™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFB7740PBF specifications
ParameterValue
SeriesStrongIRFET™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage75 V
Drive voltage (Max rds on, min rds on)6V, 10V
Current - continuous drain (Id) @ 25°C87A (Tc)
Power dissipation143W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id3.7V @ 100µA
Rds on (Max) @ id, vgs7.3mOhm @ 52A, 10V
Gate charge (Qg) (Max) @ vgs122 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds4650 pF @ 25 V

Product details

75 V StrongIRFET in a TO-220AB — what it carries

Packaged in a through-hole TO-220AB, it delivers 7.3 mOhm maximum on-resistance when driven with 10 V on the gate.

At 7.3 mOhm with a 10 V gate drive, conduction losses stay low even at 52 A load current. The drive voltage window of 6 V to 10 V lets you trade off Rds(on) against gate-drive complexity: 10 V gives the lowest on-resistance; 6 V still works but at higher resistance.

Thermal derating and mounting

The 143 W maximum power dissipation is specified at the case temperature — that number assumes a heatsink with good thermal interface. In a real enclosure, derate the continuous current from 87 A based on the junction-to-case thermal resistance and ambient conditions. The TO-220AB package fits standard clip or screw-mount heatsinks; the through-hole leads suit wave-solder assembly on FR4 or metal-core boards.

It is ROHS3 compliant. The StrongIRFET™ series is a current-production family.

Frequently asked questions

What is the typical lead time for IRFB7740PBF?

Lead time for IRFB7740PBF is confirmed at quote time against an RFQ. As an active part in the StrongIRFET™ series, it is generally available through distribution channels.