IRL540L N-Channel MOSFET 100V 28A TO-262-3 Equivalent & Substitute Parts

Part Overview

The IRL540L is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 100V drain-to-source voltage and 28A continuous drain current in a TO-262-3 through-hole package. This device is classified as obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support and procurement continuity. The TO-262-3 package (I2PAK long leads) provides a compact through-hole mounting solution suitable for moderate power applications requiring direct PCB insertion.

Substiute Parts

IRL540L

Vishay SiliconixIn Stock: 741IRL540L Datasheet

Current PartRFQ

IRF530NPBF

Infineon TechnologiesIn Stock: 85249IRF530NPBF Datasheet

MFR RecommendedRFQ

PHP18NQ10T,127

Nexperia USA Inc.In Stock: 6124PHP18NQ10T,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRL540L is determined by matching the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Drain-to-Source Voltage (Vdss): 100V minimum
• Continuous Drain Current (Id): 17A or greater at 25°C
• N-Channel MOSFET technology
• Gate voltage compatibility (Vgs ±10V or greater range)

Mechanical Matching Criteria:

• Through-hole mounting configuration
• Package compatibility with TO-220AB or TO-262-3 footprints

The identified substitutes—IRF530NPBF and PHP18NQ10T,127—meet the electrical requirements of 100V Vdss and provide drain current ratings of 17A and 18A respectively, both exceeding the minimum threshold for applications designed around the IRL540L. Both substitutes are available in TO-220AB through-hole packages, which provide compatible lead spacing and mounting characteristics for direct PCB insertion.

Parameter Comparison

Engineering Selection Recommendations

IRF530NPBF (Infineon Technologies)

The IRF530NPBF is an active-status MOSFET meeting all electrical requirements for IRL540L substitution. It provides 100V Vdss and 17A continuous drain current, with lower gate charge (37 nC) and input capacitance (920 pF) compared to the IRL540L. The device is ROHS3 compliant and carries a defined operating temperature range of -55°C to 175°C. The TO-220AB package provides through-hole mounting compatibility. This substitute is suitable for applications where compliance with current RoHS standards is required and where the reduced drain current rating (17A versus 28A) remains within design margins.

PHP18NQ10T,127 (Nexperia USA Inc.)

The PHP18NQ10T,127 is a TrenchMOS™ technology MOSFET rated for 100V Vdss and 18A continuous drain current. Although classified as obsolete, it provides electrical parameters closer to the IRL540L than the IRF530NPBF, with 18A current rating and lower gate charge (21 nC). The device is ROHS3 compliant with an operating temperature range of -55°C to 175°C. The TO-220AB package provides through-hole mounting compatibility. This substitute is applicable where the higher drain current rating (18A) better aligns with design requirements and where product status does not restrict procurement.

Product Status Consideration

The IRF530NPBF is the preferred substitute from a long-term availability perspective, as it maintains active product status with established supply chains. The PHP18NQ10T,127, while offering electrical parameters closer to the original IRL540L, carries obsolete status similar to the main part, limiting future procurement assurance.

Frequently Asked Questions (FAQ)

Q: Can the IRF530NPBF directly replace the IRL540L in existing designs?

A: The IRF530NPBF meets the core electrical requirements (100V Vdss, N-Channel MOSFET) and provides through-hole mounting. However, the drain current rating is 17A compared to the IRL540L's 28A. Direct replacement is valid only if the application operates at or below 17A continuous drain current. The TO-220AB package footprint differs from the TO-262-3, requiring PCB layout verification for lead spacing and thermal management compatibility.

Q: What is the difference between the TO-262-3 and TO-220AB packages?

A: Both are through-hole packages with three leads suitable for PCB insertion. The TO-262-3 (I2PAK long leads) provides a more compact footprint than the TO-220AB. Lead spacing and mounting hole diameters differ between packages, requiring PCB design confirmation before substitution. Thermal characteristics also differ; the TO-220AB typically provides lower thermal resistance due to its larger tab area.

Q: Why is the gate charge lower in the substitute parts?

A: The IRF530NPBF and PHP18NQ10T,127 exhibit lower gate charge (37 nC and 21 nC respectively) compared to the IRL540L (64 nC) due to differences in die design and manufacturing technology. Lower gate charge results in faster switching transitions and reduced gate drive power requirements, which can improve circuit efficiency and reduce EMI.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both IRF530NPBF and PHP18NQ10T,127 are ROHS3 compliant. The original IRL540L is RoHS non-compliant. If RoHS compliance is a design requirement, either substitute part satisfies this criterion.

Q: What is the impact of the reduced drain current rating on thermal design?

A: The substitute parts (17A and 18A) have lower maximum continuous drain current than the IRL540L (28A). In applications operating near the original 28A rating, thermal dissipation will increase due to higher on-resistance at lower current levels or circuit redesign to operate within the 17-18A range. Power dissipation calculations must be recalculated based on actual operating current and the Rds On specifications of the selected substitute.

Q: Can both substitute parts be used interchangeably?

A: Both IRF530NPBF and PHP18NQ10T,127 meet the electrical substitution criteria; however, they differ in product status and gate charge characteristics. The IRF530NPBF is preferred for new designs due to active status. The PHP18NQ10T,127 may be used where inventory is available and product status does not restrict procurement. They are not interchangeable in terms of long-term supply assurance.