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IRFZ44NSTRRPBF

Infineon IRFZ44NSTRRPBF N-Channel MOSFET, 55V, 49A, D2PAK

MPNIRFZ44NSTRRPBF
End of Life

Infineon Technologies HEXFET® N-Channel Power MOSFET, IRFZ44NSTRRPBF, 55 Vdss, 49 A Id, 17.5 mOhm Rds(on), D2PAK (TO-263) surface-mount, Tape & Reel.

$2.3200Ref. price · indicative, final on quote
Infineon Technologies IRFZ44NSTRRPBF datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

IRFZ44NSTRRPBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingSurface Mount
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C49A (Tc)
Power dissipation3.8W (Ta), 94W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTape & Reel (TR)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs17.5mOhm @ 25A, 10V
Gate charge (Qg) (Max) @ vgs63 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds1470 pF @ 25 V

Product details

What the 55V / 49A rating means for your BOM

The IRFZ44NSTRRPBF: The 17.5 mOhm max on-resistance at 25 A and 10 V gate drive keeps conduction losses under 8.6 W at that current — the 94 W case-temperature power dissipation gives plenty of thermal headroom if you bolt the D2PAK tab to a copper plane or heatsink.

D2PAK surface-mount — board integration

The D2PAK (TO-263) package — three leads plus a large drain tab — is the surface-mount sibling of the through-hole TO-220. The 175°C max junction temperature means this part can run hot, but the board-level thermal resistance will limit the practical continuous current below the 49 A case rating unless you manage the tab's thermal connection.

Frequently asked questions

Where can I buy the IRFZ44NSTRRPBF and get a price?

This part is sourced to order through independent distribution. No stock-holding claim is made here — each order is quoted individually.