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Infineon Technologies IRFB4229PBF

IRFB4229PBF HEXFET N-Channel MOSFET, 250 V, 46 A, TO-220

MPNIRFB4229PBF
End of Life

Infineon HEXFET® IRFB4229PBF, N-Channel MOSFET, 250 Vdss, 46 A Id, 46 mOhm Rds(on) at 10 V, 110 nC Qg, TO-220-3, -40 to 175 °C.

$3.45Ref. price · indicative, final on quote
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesHEXFET®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFB4229PBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage250 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C46A (Tc)
Power dissipation330W (Tc)
Operating temperature-40°C ~ 175°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id5V @ 250µA
Rds on (Max) @ id, vgs46mOhm @ 26A, 10V
Gate charge (Qg) (Max) @ vgs110 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds4560 pF @ 25 V

Product details

For a hard-switched converter at 100 kHz, the gate-drive power is roughly Qg × Vgs × fsw = 110 nC × 10 V × 100 kHz = 110 mW, well within a standard gate-driver IC's dissipation budget.

Package and mounting — through-hole TO-220

The TO-220-3 (TO-220AB) through-hole package with a metal tab requires a heatsink for any continuous current above a few amps.

ROHS3 compliant. No official second-source or successor is listed in the Infineon cross-reference database for this exact order code.

Frequently asked questions

Does IRFB4229PBF have a SMD version?

No surface-mount version of this exact die and package combination is listed. The IRFB4229PBF is a through-hole TO-220-3 part only. For a surface-mount 250 V N-channel MOSFET, you would need to look at a different Infineon series such as the DPAK-packaged parts.