IRF540ZLPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF540ZLPBF 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 packaged in TO-262-3 (I2PAK) configuration for through-hole mounting applications. The IRF540ZLPBF is classified as "Not For New Designs," indicating that Infineon has discontinued active development and marketing of this product line. Identifying equivalent substitute parts is necessary for design continuity, long-term supply chain planning, and new project implementations where the original part is no longer recommended for new applications.

Substiute Parts

IRF540ZLPBF

Infineon TechnologiesIn Stock: 3162IRF540ZLPBF Datasheet

Current PartRFQ

IPI50N10S3L16AKSA1

Infineon TechnologiesIn Stock: 765IPI50N10S3L16AKSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF540ZLPBF is determined by strict electrical and mechanical compatibility criteria. The primary substitute identified is the IPI50N10S3L16AKSA1, which maintains the following critical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss): Both rated at 100V
• FET Type: Both N-Channel MOSFETs
• Technology: Both Metal Oxide Semiconductor
• Gate Voltage Range (Vgs Max): Both rated at ±20V
• Operating Temperature Range: Both -55°C to 175°C
• Compliance: Both ROHS3 Compliant, REACH Unaffected

Mechanical Compatibility Criteria:

• Package Type: Both TO-262-3 Long Leads (I2PAK)
• Mounting Type: Both Through Hole
• Supplier Device Package: Both compatible with TO-262-3 footprint

The IPI50N10S3L16AKSA1 represents an enhanced alternative within the same voltage class and package family, offering improved performance characteristics while maintaining pin-compatible mechanical and electrical interfaces.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using IRF540ZLPBF:

The IRF540ZLPBF is classified as "Not For New Designs" by Infineon Technologies. Existing applications currently utilizing this part should evaluate the IPI50N10S3L16AKSA1 as a direct substitute. Both devices share identical voltage ratings (100V Vdss), compatible package geometry (TO-262-3), and equivalent operating temperature ranges (-55°C to 175°C). Both maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

For New Design Implementations:

New designs should not be initiated with the IRF540ZLPBF due to its discontinued status. The IPI50N10S3L16AKSA1, classified as "Last Time Buy," provides superior electrical performance with 50A continuous drain current versus 36A, lower on-state resistance (15.7mOhm versus 26.5mOhm at 10V), and higher power dissipation capability (100W versus 92W). The IPI50N10S3L16AKSA1 belongs to the OptiMOS™ series, representing a more recent technology generation within the same voltage and package class.

Compliance and Supply Chain Considerations:

Both parts maintain identical regulatory compliance profiles (ROHS3, REACH Unaffected, EAR99 ECCN classification). The IPI50N10S3L16AKSA1 currently has 684 units in stock versus 3100 units for the IRF540ZLPBF. Long-term availability of the IRF540ZLPBF is not guaranteed due to its discontinued status. Design transitions should prioritize the IPI50N10S3L16AKSA1 for supply chain security.

Frequently Asked Questions (FAQ)

Q: Can the IPI50N10S3L16AKSA1 directly replace the IRF540ZLPBF in existing PCB layouts?

A: Yes. Both devices use the TO-262-3 package with identical pin configurations and through-hole mounting requirements. No PCB layout modifications are necessary for mechanical compatibility. Electrical performance is enhanced with the substitute part.

Q: What are the key electrical differences between these two parts?

A: The IPI50N10S3L16AKSA1 provides higher continuous drain current (50A versus 36A), lower on-state resistance (15.7mOhm versus 26.5mOhm at 10V), and higher power dissipation rating (100W versus 92W). Both maintain identical 100V voltage ratings and ±20V gate voltage limits. These differences represent performance improvements rather than incompatibilities.

Q: Are there any thermal management differences between the IRF540ZLPBF and IPI50N10S3L16AKSA1?

A: Both devices operate across the same temperature range (-55°C to 175°C junction temperature). The IPI50N10S3L16AKSA1 has a higher maximum power dissipation rating (100W versus 92W), indicating improved thermal performance. Both use identical TO-262-3 package geometry with equivalent thermal interface characteristics.

Q: Why is the IRF540ZLPBF marked "Not For New Designs"?

A: This designation indicates that Infineon Technologies has discontinued active development and marketing of this product line. The IPI50N10S3L16AKSA1 represents the current generation equivalent within the same voltage and package class, offering superior performance characteristics and assured long-term availability.

Q: What is the difference between TO-262-3 and PG-TO262-3 package designations?

A: Both designations refer to the same physical package format: TO-262-3 Long Leads (I2PAK) for through-hole mounting. The "PG" prefix in PG-TO262-3 indicates the supplier's internal package designation. Pin configuration, footprint, and mechanical dimensions are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the IRF540ZLPBF and IPI50N10S3L16AKSA1 are ROHS3 Compliant with Moisture Sensitivity Level (MSL) 1 (Unlimited). Both are REACH Unaffected and classified under ECCN EAR99 with HTSUS code 8541.29.0095.

Q: What is the gate charge difference, and does it affect circuit design?

A: Gate charge (Qg) is nearly identical: 63nC for IRF540ZLPBF versus 64nC for IPI50N10S3L16AKSA1, both measured at 10V. This negligible difference does not require gate drive circuit modifications.

Q: Can the IPI50N10S3L16AKSA1 be used in applications requiring the exact 36A current rating?

A: Yes. The IPI50N10S3L16AKSA1 is rated for 50A continuous drain current, which exceeds the 36A requirement of the original application. The substitute part operates safely at lower current levels with improved thermal margin and reduced on-state power dissipation.