IRF1405SPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF1405SPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 131A continuous drain current in a D2PAK surface mount package. This device is part of the HEXFET® series and is designed for high-current switching applications requiring low on-resistance performance.

The IRF1405SPBF is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute selection must be based on electrical parameter compatibility within the D2PAK package form factor.

Substiute Parts

IRF1405SPBF

Infineon TechnologiesIn Stock: 3077IRF1405SPBF Datasheet

Current PartRFQ

IPB054N06N3GATMA1

Infineon TechnologiesIn Stock: 2376IPB054N06N3GATMA1 Datasheet

MFR RecommendedRFQ

IPB80N06S2H5AUMA1

Infineon TechnologiesIn Stock: 951IPB80N06S2H5AUMA1 Datasheet

MFR RecommendedRFQ

BUK7610-55AL,118

Nexperia USA Inc.In Stock: 5899BUK7610-55AL,118 Datasheet

MFR RecommendedRFQ

IXFA230N075T2

IXYSIn Stock: 1837IXFA230N075T2 Datasheet

MFR RecommendedRFQ

PSMN4R6-60BS,118

Nexperia USA Inc.In Stock: 11277PSMN4R6-60BS,118 Datasheet

MFR RecommendedRFQ

STB150NF55T4

STMicroelectronicsIn Stock: 10285STB150NF55T4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF1405SPBF is determined by the following critical parameters:

Voltage Rating (Vdss): The substitute must equal or exceed 55V. Parts rated at 60V or higher maintain backward compatibility with the original 55V specification.

Current Rating (Id): The substitute must support continuous drain current at or above 131A at 25°C. Lower current ratings reduce design margin and are not acceptable substitutes.

On-Resistance (Rds On): The substitute must maintain comparable or lower on-resistance to ensure thermal performance and power efficiency. Higher on-resistance increases heat dissipation and may exceed thermal design limits.

Package Compatibility: All substitutes must use the D2PAK (TO-263-3) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Gate Charge (Qg): Lower gate charge values improve switching speed and reduce driver power requirements. Gate charge values up to approximately 260 nC are acceptable.

Temperature Range: Operating temperature range must match or exceed -55°C to 175°C (TJ).

Compliance: All substitutes must maintain ROHS3 compliance and equivalent regulatory status (REACH Unaffected, EAR99 classification).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: STB150NF55T4

The STB150NF55T4 from STMicroelectronics is the closest functional equivalent. It maintains the same 55V voltage rating and D2PAK package as the IRF1405SPBF. With 120A continuous drain current, it provides 92% of the original current rating while delivering superior power dissipation capability (300W vs. 200W). The device is currently in Active production status, ensuring long-term availability. Lower gate charge (190 nC) improves switching performance. ROHS3 compliance and equivalent regulatory status match the original specification.

Secondary Substitute: PSMN4R6-60BS,118

The PSMN4R6-60BS,118 from Nexperia USA Inc. offers 60V voltage rating and 100A continuous drain current in D2PAK package. This part is currently Active and provides excellent on-resistance performance (4.4 mOhm). The 60V rating provides 9% voltage margin above the original 55V specification. Power dissipation of 211W exceeds the original 200W rating. Gate charge of 70.8 nC is significantly lower, enabling faster switching. This part is suitable for applications where current requirements can be met with 100A rating.

Alternative Substitute: IXFA230N075T2

The IXFA230N075T2 from IXYS is an Active product offering significantly higher performance specifications. With 230A continuous drain current and 75V voltage rating, this device provides substantial design margin. Superior on-resistance (4.2 mOhm) and power dissipation (480W) support high-current applications. The 75V rating provides 36% voltage margin. This part is suitable for applications requiring higher current capacity or operating margin.

Not Recommended: IPB054N06N3GATMA1 and BUK7610-55AL,118

IPB054N06N3GATMA1 is in Last Time Buy status with only 80A continuous drain current, providing insufficient current margin for direct substitution. BUK7610-55AL,118 is Obsolete with only 75A rating and higher on-resistance (10 mOhm), making it unsuitable for equivalent performance.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower current rating than the IRF1405SPBF?

A: No. The IRF1405SPBF is rated for 131A continuous drain current. Substitute parts must support this current level or higher to maintain design margin and thermal performance. Parts with lower current ratings (such as BUK7610-55AL,118 at 75A) will operate outside design specifications and may cause thermal failure.

Q: What is the significance of on-resistance (Rds On) in selecting a substitute?

A: On-resistance directly determines power dissipation and heat generation. Lower on-resistance reduces power loss and improves efficiency. The IRF1405SPBF specifies 5.3 mOhm maximum. Substitutes with comparable or lower on-resistance (such as PSMN4R6-60BS,118 at 4.4 mOhm) provide equivalent or superior thermal performance. Higher on-resistance increases heat dissipation and may exceed thermal design limits.

Q: Can I use a substitute with higher voltage rating (Vdss)?

A: Yes. A higher voltage rating provides design margin and is electrically compatible. The IRF1405SPBF is rated for 55V. Substitutes rated at 60V (IPB054N06N3GATMA1, PSMN4R6-60BS,118) or 75V (IXFA230N075T2) are acceptable. The higher voltage rating does not degrade performance in 55V applications.

Q: Why is package type critical for substitution?

A: The D2PAK (TO-263-3) package is mechanically and electrically defined for the PCB layout. All substitute parts must use identical package geometry to ensure proper mounting, thermal contact with the PCB, and electrical connectivity. Package mismatches require PCB redesign and are not acceptable for direct substitution.

Q: What does "Last Time Buy" status mean for IPB054N06N3GATMA1?

A: Last Time Buy indicates the manufacturer will cease production after a specified date. While currently available, this part has limited future availability. For new designs or long-term production, Active status parts (STB150NF55T4, PSMN4R6-60BS,118, IXFA230N075T2) are preferred to ensure sustained supply.

Q: How does gate charge (Qg) affect circuit performance?

A: Gate charge determines the energy required to switch the MOSFET on and off. Lower gate charge reduces driver power requirements and enables faster switching. The IRF1405SPBF specifies 260 nC. Substitutes with lower gate charge (such as PSMN4R6-60BS,118 at 70.8 nC) improve switching speed and reduce driver stress. Higher gate charge values are acceptable but may increase switching losses.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant and REACH Unaffected, matching the regulatory status of the IRF1405SPBF. All parts carry EAR99 classification for export control purposes.

Q: Can I use IXFA230N075T2 as a direct replacement in all applications?

A: IXFA230N075T2 is electrically compatible and provides superior performance specifications. However, the significantly higher current rating (230A vs. 131A) and power dissipation (480W vs. 200W) may result in over-specification for applications designed for the IRF1405SPBF. This part is suitable for applications requiring higher performance margin or future current expansion.