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Infineon Technologies IRLZ44ZPBF — Discrete Semiconductors

IRLZ44ZPBF HEXFET N-Channel MOSFET, 55 V, 51 A, TO-220

MPNIRLZ44ZPBF
Last Buy

Infineon HEXFET® IRLZ44ZPBF, N-Channel MOSFET, 55 V Vdss, 51 A continuous drain, 13.5 mOhm Rds(on) at 10 V, TO-220-3, -55°C to 175°C.

$0.5549Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRLZ44ZPBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C51A (Tc)
Power dissipation80W (Tc)
Operating temperature-55°C~175°C(TJ)
PackageTube
Vgs±16V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id3V @ 250µA
Rds on (Max) @ id, vgs13.5mOhm @ 31A, 10V
Gate charge (Qg) (Max) @ vgs36 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds1620 pF @ 25 V

Product details

Last-time-buy — plan the BOM move now

Sourcing through independent distribution can fill bridge quantities, but the design should plan for a substitute before the LTB window closes.

Because the IRLZ44ZPBF is in Last Buy status, standard distributor stock may be depleted.

Frequently asked questions

Is IRLZ44ZPBF obsolete?

The IRLZ44ZPBF is in Last Buy status — Infineon has announced end-of-life, and the final purchasing window is open. It is not yet obsolete, but production will cease after the last-time-buy period.

What is the replacement for IRLZ44ZPBF?

A pin-compatible N-channel TO-220 MOSFET with similar Vdss (55 V), continuous drain current (51 A), and Rds(on) (13.5 mOhm at 10 V) would be the closest functional alternative, but qualification testing is required before substitution.

What are the specifications of IRLZ44ZPBF?

The IRLZ44ZPBF is an N-channel HEXFET MOSFET in a TO-220-3 package.