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Infineon Technologies IRLZ34NSPBF — Discrete Semiconductors

IRLZ34NSPBF Infineon HEXFET N-Channel MOSFET, 55 V, 30 A

MPNIRLZ34NSPBF
Obsolete

Infineon HEXFET® series, IRLZ34NSPBF, N-Channel MOSFET, 55 V drain-source, 30 A continuous drain, 35 mΩ Rds(on) max at 10 V, D2PAK (TO-263) surface-mount package, -55°C to 175°C junction temperature.

$0.4800Ref. price · indicative, final on quote
Infineon Technologies IRLZ34NSPBF datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRLZ34NSPBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingSurface Mount
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)4V, 10V
Current - continuous drain (Id) @ 25°C30A (Tc)
Power dissipation3.8W (Ta), 68W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±16V
TechnologyMOSFET (Metal Oxide)
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Vgs(th) (Max) @ id2V @ 250µA
Rds on (Max) @ id, vgs35mOhm @ 16A, 10V
Gate charge (Qg) (Max) @ vgs25 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds880 pF @ 25 V

Product details

55 V, 30 A, 35 mΩ — the load-switching envelope

The logic-level gate threshold — 2 V maximum at 250 µA — means a 5 V or 3.3 V logic output can fully enhance the channel, though the Rds(on) spec is characterised at both 4 V and 10 V gate drive, so confirm the on-resistance at your actual gate voltage.

Housed in a D2PAK (TO-263-3) surface-mount package, the part dissipates 3.8 W in still air at 25 °C ambient and 68 W when the tab is held at 25 °C. The 68 W figure assumes a thermal pad or heatsink on the exposed tab — without it, the continuous current rating drops sharply.

Obsolete — sourcing path for production

Infineon lists the IRLZ34NSPBF as obsolete. For BOM lines that still call this exact marking, the channel is independent distribution — last-time-buy inventory and qualified surplus. If your design is still in prototyping, consider evaluating a current-production logic-level N-channel MOSFET in D2PAK with similar Vds and Id ratings to avoid a future last-time-buy scramble.

Frequently asked questions

Is IRLZ34NSPBF obsolete?

Buyers need to know lifecycle status for long-term availability and to plan replacements.

What is the replacement for IRLZ34NSPBF?

Engineers and buyers require a drop-in compatible part to avoid redesign when the original is obsolete.

Where can I buy IRLZ34NSPBF?

Sourcing buyers need active distributors or brokers that still carry this obsolete part.

What are the specifications of IRLZ34NSPBF?

Designers must verify electrical ratings and package to ensure fit in their circuit.

Is IRLZ34NSPBF in stock anywhere?

Immediate production needs require real-time inventory checking to avoid line stoppage.

What is the equivalent of IRLZ34NSPBF?

Alternative parts enable flexibility in sourcing and second-sourcing for reliability.