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Infineon Technologies IRFZ44NSTRR — Discrete Semiconductors

IRFZ44NSTRR N-Channel MOSFET, 55V 49A D2PAK, Obsolete

MPNIRFZ44NSTRR
Obsolete

International Rectifier HEXFET N-Channel MOSFET, 55 V drain-source, 49 A continuous drain, 17.5 mΩ Rds(on) at 10 V drive, D2PAK surface mount, -55°C to 175°C junction.

$1.7600Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFZ44NSTRR 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

Obsolete — no direct successor on record

The IRFZ44NSTRR carries an obsolete lifecycle status per the manufacturer.

D2PAK surface-mount — footprint and thermal path

The TO-263-3 (D²Pak) package with two leads and a tab is a surface-mount power package.

Frequently asked questions

What is the replacement for IRFZ44NSTRR?

Qualification testing on the alternate is recommended before committing the BOM.

What are the specifications of IRFZ44NSTRR?

It comes in a D2PAK (TO-263-3) surface-mount package.