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Infineon Technologies IRFZ44VSTRL — Discrete Semiconductors

IRFZ44VSTRL HEXFET N-Channel MOSFET, 60V 55A D2PAK

MPNIRFZ44VSTRL
Obsolete

IRFZ44VSTRL, Infineon (International Rectifier) HEXFET® N-Channel MOSFET, 60 V drain-to-source, 55 A continuous drain, 16.5 mΩ Rds(on) at 10 V gate drive, D2PAK (TO-263) surface mount, -55°C to 175°C junction temperature.

Infineon Technologies IRFZ44VSTRL datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFZ44VSTRL specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingSurface Mount
Drain to source voltage60 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C55A (Tc)
Power dissipation115W (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, vgs16.5mOhm @ 31A, 10V
Gate charge (Qg) (Max) @ vgs67 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds1812 pF @ 25 V

Product details

The IRFZ44VSTRL: The device comes in a D2PAK (TO-263) surface-mount package, which suits automated assembly and provides a large solder tab for heat sinking. Typical applications include DC-DC converters, motor drives, battery management, and power supply switching stages where a 60 V blocking voltage and low conduction loss are required.

16.5 mΩ Rds(on) — conduction loss in the BOM

At 31 A drain current the Rds(on) is characterized, but the 55 A continuous rating means the designer must derate for junction temperature — the 175 °C maximum junction rating provides headroom for high-temperature operation in engine-bay or industrial environments.

Infineon no longer manufactures this specific order code, so new production buys are not possible through the factory channel. Sourcing is limited to surplus inventory, broker networks, and independent distributors who hold remaining stock or can locate it from existing supply chains.

Frequently asked questions

What is the IRFZ44VSTRL used for?

This N-channel MOSFET is used in power switching applications such as DC-DC converters, motor drives, battery management circuits, and power supply stages where a 60 V blocking voltage and low conduction loss (16.5 mΩ Rds(on)) are required. The D2PAK package suits surface-mount assembly and moderate power levels.

IRFZ44VSTRL vs IRFZ44V – which one should I use?

The IRFZ44VSTRL is the surface-mount D2PAK variant of the through-hole IRFZ44V. The 'STRL' suffix indicates Tape & Reel packaging for automated assembly. The electrical specifications — 60 V Vdss, 55 A Id, 16.5 mΩ Rds(on) — are essentially the same. Choose the IRFZ44VSTRL if your PCB uses surface-mount assembly; choose the IRFZ44V if you need a through-hole TO-220 package for manual assembly or higher thermal dissipation via a heatsink.