IRFP4232PBF N-Channel MOSFET 250V 60A Equivalent & Substitute Parts

Part Overview

The IRFP4232PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 250V drain-to-source voltage and 60A continuous drain current in a Through Hole TO-247AC package. This device is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity. The HEXFET® series construction provides the electrical characteristics required for high-voltage switching applications.

Substiute Parts

IRFP4232PBF

Infineon TechnologiesIn Stock: 5812IRFP4232PBF Datasheet

Current PartRFQ

IRFP4332PBF

Infineon TechnologiesIn Stock: 19106IRFP4332PBF Datasheet

MFR RecommendedRFQ

FQA28N15

onsemiIn Stock: 4158FQA28N15 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRFP4232PBF are selected based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss) rating must equal or exceed 250V
• Continuous drain current (Id) must meet or exceed 60A at 25°C
• Package type must be Through Hole TO-247AC or equivalent footprint
• Gate threshold voltage (Vgs(th)) must be compatible with 10V drive voltage
• Operating temperature range must span -40°C to 175°C minimum

Substitutes are grouped into two categories:

1. Direct Voltage/Current Class Substitutes – Parts maintaining 250V Vdss rating with comparable or superior current ratings
2. Reduced Voltage Substitutes – Parts with lower Vdss ratings suitable only for applications not requiring full 250V capability

Parameter Comparison

Engineering Selection Recommendations

IRFP4332PBF (Infineon Technologies) – Recommended Primary Substitute

The IRFP4332PBF is the preferred substitute for the obsolete IRFP4232PBF. Both devices maintain identical 250V Vdss ratings and are housed in the same TO-247-3 Through Hole package, ensuring direct mechanical and electrical compatibility. The IRFP4332PBF delivers 57A continuous drain current, which is 95% of the original 60A specification, meeting the requirements of applications designed for the IRFP4232PBF. The IRFP4332PBF exhibits superior on-state resistance (33 mOhm versus 35.7 mOhm), lower gate charge (150 nC versus 240 nC), and higher maximum gate voltage rating (±30V versus ±20V). The device is classified as Active, ensuring long-term availability and supply chain stability. RoHS3 compliance and identical REACH status provide regulatory continuity.

FQA28N15 (onsemi) – Limited Voltage Application Substitute

The FQA28N15 is a reduced-voltage alternative suitable only for applications where the 250V Vdss requirement can be relaxed to 150V. This device is rated for 33A continuous drain current and features significantly lower gate charge (52 nC) and input capacitance (1600 pF), making it suitable for high-frequency switching circuits with reduced power dissipation requirements. The FQA28N15 uses a different package footprint (TO-3P-3 / SC-65-3) requiring PCB layout modification. This device is classified as Obsolete, limiting its suitability for new designs requiring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can the IRFP4332PBF directly replace the IRFP4232PBF without PCB modifications?

A: Yes. Both devices use the TO-247-3 Through Hole package with identical pinout and footprint. No PCB layout changes are required. The IRFP4332PBF is mechanically and electrically compatible as a direct replacement.

Q: What is the significance of the 3A difference in continuous drain current between IRFP4232PBF (60A) and IRFP4332PBF (57A)?

A: The 3A difference represents a 5% reduction in maximum continuous current rating. For applications operating at or near the 60A limit, thermal analysis must confirm that the lower rating does not exceed design margins. Most applications operate below maximum ratings and will not be affected by this specification difference.

Q: Why is the IRFP4332PBF preferred over the FQA28N15?

A: The IRFP4332PBF maintains the 250V Vdss rating of the original IRFP4232PBF, ensuring compatibility with circuits designed for this voltage class. The FQA28N15 is rated for only 150V, making it unsuitable for applications requiring the full 250V capability. Additionally, the IRFP4332PBF is Active (long-term availability), while the FQA28N15 is Obsolete.

Q: Can the FQA28N15 be used in a 250V application?

A: No. The FQA28N15 is rated for maximum 150V Vdss. Using this device in a 250V circuit will result in device failure and potential circuit damage. Voltage derating rules do not permit operation above the maximum rated Vdss.

Q: What are the package differences between these substitutes?

A: The IRFP4232PBF and IRFP4332PBF both use TO-247-3 Through Hole packages with identical footprints. The FQA28N15 uses TO-3P-3 / SC-65-3 package, which has a different pinout and requires PCB layout redesign. Package compatibility is a critical factor in substitute selection.

Q: Are there compliance or regulatory differences between these parts?

A: The IRFP4332PBF is RoHS3 Compliant, while the IRFP4232PBF and FQA28N15 do not specify RoHS status in the provided data. All three devices are REACH Unaffected and classified under ECCN EAR99. For applications requiring RoHS compliance, the IRFP4332PBF is the appropriate choice.

Q: What does "Obsolete" product status mean for the IRFP4232PBF?

A: Obsolete status indicates that the manufacturer has discontinued production and will not accept new orders. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. Transition to an Active substitute (IRFP4332PBF) is recommended for design continuity.

Q: How do gate charge differences affect circuit design?

A: The IRFP4332PBF has lower gate charge (150 nC versus 240 nC), requiring less energy to switch the device. This reduces gate driver power dissipation and allows faster switching transitions. Existing gate driver circuits designed for the IRFP4232PBF will operate more efficiently with the IRFP4332PBF without modification.