IRF540ZL MOSFET N-Channel 100V 36A Equivalent & Substitute Parts

Part Overview

The IRF540ZL is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 36A continuous drain current at 25°C. This device is housed in a TO-262 through-hole package and is part of the HEXFET® series. The IRF540ZL is classified as obsolete, necessitating identification of equivalent substitute components for ongoing production and maintenance applications. Substitute parts must maintain identical electrical performance characteristics and package compatibility to ensure direct replacement capability.

Substiute Parts

IRF540ZL

Infineon TechnologiesIn Stock: 1080IRF540ZL Datasheet

Current PartRFQ

IRF540ZLPBF

Infineon TechnologiesIn Stock: 3162IRF540ZLPBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF540ZL is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameter Equivalence:

• Drain-to-source voltage (Vdss) of 100V
• Continuous drain current (Id) of 36A at 25°C
• On-state resistance (Rds On) of 26.5 mOhm maximum at specified conditions
• Gate threshold voltage (Vgs(th)) of 4V maximum
• Gate charge (Qg) of 63 nC maximum
• Input capacitance (Ciss) of 1770 pF maximum
• Power dissipation capability of 92W

Mechanical Parameter Equivalence:

• Through-hole mounting configuration
• TO-262 package family (TO-262-3 Long Leads, I2PAK, TO-262AA)
• Identical lead configuration and pin spacing

Functional Equivalence:

• N-Channel MOSFET technology
• HEXFET® series classification
• Operating temperature range of -55°C to 175°C

Substitute parts meeting all these criteria are electrically and mechanically interchangeable with the IRF540ZL in existing circuit designs without modification to PCB layout or schematic topology.

Parameter Comparison

Engineering Selection Recommendations

IRF540ZLPBF as Primary Substitute:

The IRF540ZLPBF is a parametric equivalent to the IRF540ZL with identical electrical specifications across all critical performance parameters. Both devices share the same drain-to-source voltage rating, continuous drain current capacity, on-state resistance, gate charge characteristics, and thermal performance. The TO-262 package configuration is identical, ensuring direct mechanical compatibility without PCB redesign.

The IRF540ZLPBF differs from the IRF540ZL in product status and regulatory compliance. The IRF540ZLPBF carries ROHS3 compliance, whereas the IRF540ZL is RoHS non-compliant. The IRF540ZLPBF is designated as "Not For New Designs," indicating it remains available for replacement and maintenance applications but is not recommended for new product development.

For applications requiring RoHS compliance or regulatory adherence to current environmental standards, the IRF540ZLPBF provides full electrical and mechanical substitution with improved compliance posture. For legacy system maintenance where the original IRF540ZL is no longer available, the IRF540ZLPBF serves as a direct replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the IRF540ZLPBF replace the IRF540ZL in existing circuit designs?

A: Yes. The IRF540ZLPBF is electrically and mechanically equivalent to the IRF540ZL. All critical electrical parameters—including Vdss, Id, Rds On, Vgs(th), gate charge, and power dissipation—are identical. The TO-262 package configuration is unchanged, permitting direct substitution without PCB layout modification or schematic revision.

Q: What is the difference between IRF540ZL and IRF540ZLPBF?

A: The primary differences are product status and RoHS compliance. The IRF540ZL is classified as obsolete and RoHS non-compliant. The IRF540ZLPBF is designated "Not For New Designs" and is ROHS3 compliant. Electrical performance and package specifications are identical.

Q: Are there any packaging differences between these parts?

A: Both the IRF540ZL and IRF540ZLPBF use the TO-262 package family (TO-262-3 Long Leads, I2PAK, TO-262AA) with through-hole mounting. Lead configuration, pin spacing, and mechanical dimensions are identical. The IRF540ZLPBF is supplied in tube packaging, whereas the IRF540ZL packaging type was not specified in the provided data.

Q: What parameters determine substitution eligibility for N-Channel MOSFETs in the 100V class?

A: Substitution eligibility is determined by equivalence in: (1) drain-to-source voltage rating, (2) continuous drain current capacity, (3) on-state resistance (Rds On), (4) gate threshold voltage, (5) gate charge, (6) input capacitance, (7) power dissipation rating, (8) operating temperature range, and (9) package type and pin configuration. All parameters must match or exceed the original specification.

Q: Is the IRF540ZLPBF suitable for new product designs?

A: The IRF540ZLPBF is designated "Not For New Designs," indicating it is available for replacement and maintenance applications but not recommended for new product development. For new designs, consultation with the manufacturer regarding current-generation alternatives is advised.

Q: What is the moisture sensitivity level for these devices?

A: Both the IRF540ZL and IRF540ZLPBF carry a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements. Standard handling and storage practices are sufficient.