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Infineon Technologies IRFZ34NLPBF — Discrete Semiconductors

IRFZ34NLPBF HEXFET N-Channel MOSFET, 55 V, 29 A, TO-262

MPNIRFZ34NLPBF
Obsolete

IRFZ34NLPBF, Infineon HEXFET® N-Channel MOSFET, 55 V Vdss, 29 A continuous drain, 40 mOhm Rds(on) at 10 V, TO-262-3 (I²Pak) through-hole package, -55°C to 175°C junction temperature.

Infineon Technologies IRFZ34NLPBF datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFZ34NLPBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C29A (Tc)
Power dissipation3.8W (Ta), 68W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-262-3 Long Leads, I²Pak, TO-262AA
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs40mOhm @ 16A, 10V
Gate charge (Qg) (Max) @ vgs34 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds700 pF @ 25 V

Product details

Device overview and key ratings

The IRFZ34NLPBF is an N-channel enhancement-mode MOSFET from Infineon's HEXFET® series, housed in a TO-262-3 (I²Pak) through-hole package.

Switching and drive characteristics

Gate charge is 34 nC at 10 V, which sets the energy per switching cycle and influences gate-driver selection. Input capacitance measures 700 pF at 25 V drain-source, a figure that affects switching losses and drive current requirements. These parameters are directly relevant when sizing the gate-drive circuit and estimating switching losses in a converter or motor-drive application.

Thermal and power dissipation

Maximum power dissipation is 3.8 W at ambient temperature (Ta) and 68 W at case temperature (Tc). The TO-262 package with long leads (I²Pak) is designed for through-hole mounting on a PCB or heatsink.

The IRFZ34NLPBF is officially classified as Obsolete by the manufacturer. Sourcing is limited to surplus inventory and independent distribution channels.

Frequently asked questions

What is a direct replacement for IRFZ34NLPBF?

No official direct replacement is listed in the manufacturer's records. Any substitute must be evaluated for pin-compatibility, voltage rating (55 V), current rating (29 A), on-resistance (40 mOhm), gate charge, and thermal performance. A cross-reference search against the original BOM is recommended.