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Infineon Technologies IRL540NL — Discrete Semiconductors

IRL540NL HEXFET N-Channel MOSFET, 100V 36A TO-262

MPNIRL540NL
Obsolete

Infineon HEXFET® series IRL540NL, N-Channel MOSFET, 100V Vdss, 36A Continuous Drain, 44mOhm Rds(on) @ 18A, 10V, TO-262-3 Long Leads (I²Pak, TO-262AA) Through Hole.

$1.5400Ref. price · indicative, final on quote
Infineon Technologies IRL540NL datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRL540NL specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage100 V
Drive voltage (Max rds on, min rds on)4V, 10V
Current - continuous drain (Id) @ 25°C36A (Tc)
Power dissipation3.8W (Ta), 140W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±16V
TechnologyMOSFET (Metal Oxide)
CaseTO-262-3 Long Leads, I²Pak, TO-262AA
Vgs(th) (Max) @ id2V @ 250µA
Rds on (Max) @ id, vgs44mOhm @ 18A, 10V
Gate charge (Qg) (Max) @ vgs74 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds1800 pF @ 25 V

Product details

Obsolete HEXFET — what this means for your BOM

It is listed as obsolete, which means the manufacturer has ended production and there is no ongoing factory supply channel. Any available units are from distributor or broker inventory that was produced before the last-time-buy window closed.

100V / 36A / 44mOhm — the replacement spec window

The gate threshold is 2 V max at 250 µA, and the device is specified with a drive voltage range of 4 V to 10 V for achieving the rated Rds(on). Total gate charge is 74 nC at 5 V, and input capacitance is 1800 pF at 25 V. These numbers define the switching and conduction performance that a replacement must meet or exceed.

TO-262 through-hole — mechanical fit constraint

The IRL540NL is packaged in a TO-262-3 with long leads, also known as I²Pak or TO-262AA. This is a through-hole mounting package, not surface-mount. Any pin-compatible alternative must share this same three-lead TO-262 footprint and lead form to drop into an existing PCB layout without board rework.

Frequently asked questions

Is the IRL540NL obsolete?

Yes, the IRL540NL is officially listed as obsolete. Infineon has discontinued production, and no new factory orders are being accepted. Sourcing is limited to existing distributor or broker inventory.

What is a direct replacement for the IRL540NL?

A search across N-channel MOSFETs in TO-220 or TO-262 packages with similar ratings is the practical path for a cross-reference.

Where can I buy the IRL540NL?

Submit an RFQ for current availability and pricing. Because the part is obsolete, availability is limited to existing stock, and lead times and quantities are confirmed at quote time.