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Infineon Technologies IRFZ34NSTRRPBF — Discrete Semiconductors

IRFZ34NSTRRPBF HEXFET N-Channel MOSFET, 55V, 29A, D2PAK

MPNIRFZ34NSTRRPBF
Obsolete

Infineon / International Rectifier HEXFET® N-Channel MOSFET, IRFZ34NSTRRPBF, 55 V Vdss, 29 A Id, 40 mOhm Rds(on) at 10 V, 34 nC Qg, D2PAK (TO-263) surface mount, -55°C to 175°C.

$1.5200Ref. price · indicative, final on quote
Infineon Technologies IRFZ34NSTRRPBF datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRFZ34NSTRRPBF 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°C29A (Tc)
Power dissipation3.8W (Ta), 68W (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, vgs40mOhm @ 16A, 10V
Gate charge (Qg) (Max) @ vgs34 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds700 pF @ 25 V

Product details

40 mOhm at 16 A — the conduction loss number that matters

The IRFZ34NSTRRPBF is an Infineon HEXFET N-channel power MOSFET in a D2PAK surface-mount package. The 55 V drain-source rating puts it squarely in 12 V, 24 V, and 48 V nominal bus designs, though the 55 V ceiling leaves thin margin for a 48 V rail with inductive spikes — a 60 V or 75 V part would be the safer call there.

Gate charge and switching — what 34 nC buys you

It means the gate driver doesn't need to supply a lot of current to switch the FET on and off quickly, which keeps the driver's power dissipation manageable in a 100 kHz to 200 kHz switching regulator or motor drive.

If this part is on your BOM, the procurement decision is whether to buy enough to cover the product's remaining service life now, or to qualify a pin-compatible replacement. The IRFZ34N family has several through-hole and surface-mount variants; a direct D2PAK replacement would be another IRFZ34N-suffix part in the same package, but the exact order code and its lifecycle need checking at quote time.

Frequently asked questions

Is IRFZ34NSTRRPBF obsolete and what is a suitable replacement?

Yes, the IRFZ34NSTRRPBF is obsolete per Infineon's lifecycle status. A suitable replacement would be another IRFZ34N variant in the same D2PAK package, such as the IRFZ34NSTRLPBF or IRFZ34NSTRL, but each needs its own lifecycle check — some may also be obsolete. For a new design, consider a current-production 55 V to 60 V N-channel MOSFET in D2PAK from Infineon's StrongIRFET or OptiMOS families, or from a competitor like STMicroelectronics or onsemi. The exact pin-compatible drop-in depends on the gate-drive voltage and switching frequency of your application.