IRFBA1405P N-Channel MOSFET 55V 174A Equivalent & Substitute Parts

Part Overview

The IRFBA1405P is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage with 174A continuous drain current at 25°C. This device features the SUPER-220™ (TO-273AA) through-hole package and is part of the HEXFET® series. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. The IRFBA1405P delivers 330W maximum power dissipation and operates across the temperature range of -40°C to 175°C (TJ).

Substiute Parts

IRFBA1405P

Infineon TechnologiesIn Stock: 1903IRFBA1405P Datasheet

Current PartRFQ

IRF1405PBF

Infineon TechnologiesIn Stock: 55399IRF1405PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFBA1405P is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Drain to Source Voltage (Vdss): 55V
• Continuous Drain Current (Id) @ 25°C: Minimum 169A
• On-State Resistance (Rds On): Maximum 5.3mOhm @ 101A, 10V
• Gate Charge (Qg): 260nC @ 10V
• Power Dissipation: 330W (Tc)
• Operating Temperature Range: Minimum -40°C to 175°C
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Mounting Type: Through Hole

The IRF1405PBF qualifies as a manufacturer-recommended substitute based on matching all critical electrical parameters within specified tolerances and maintaining compatible through-hole mounting. The IRF1405PBF operates at -55°C minimum (exceeding the -40°C requirement) and delivers 169A continuous drain current, which satisfies the functional requirements of the obsolete IRFBA1405P.

Parameter Comparison

Engineering Selection Recommendations

The IRF1405PBF is the manufacturer-recommended substitute for the obsolete IRFBA1405P. Selection of this substitute is justified on the following engineering grounds:

Product Status: The IRFBA1405P is classified as obsolete, whereas the IRF1405PBF maintains active product status with full manufacturer support and availability (55,300 pieces in stock versus 1,800 pieces for the obsolete part).

Electrical Compatibility: All critical electrical parameters align within acceptable tolerances. The IRF1405PBF delivers 169A continuous drain current against the IRFBA1405P specification of 174A, representing a 2.9% reduction. On-state resistance increases marginally from 5mOhm to 5.3mOhm, a 6% variance within acceptable engineering margins for this device class. Voltage ratings, gate charge, and input capacitance remain identical.

Thermal Performance: Both devices dissipate 330W maximum power and operate across overlapping temperature ranges. The IRF1405PBF extends the minimum operating temperature to -55°C, exceeding the IRFBA1405P specification of -40°C.

Compliance: The IRF1405PBF achieves ROHS3 compliance, whereas the IRFBA1405P is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements.

Package Consideration: The IRFBA1405P uses SUPER-220™ (TO-273AA) packaging, while the IRF1405PBF uses standard TO-220AB (TO-220-3) packaging. Both are through-hole mount configurations with compatible pin configurations for direct substitution in most applications. PCB layout verification is required to confirm mechanical fit within the specific application.

Frequently Asked Questions (FAQ)

Q: Can the IRF1405PBF directly replace the IRFBA1405P in all applications?

A: The IRF1405PBF is electrically compatible with the IRFBA1405P for applications operating within the specified parameter ranges. The 2.9% reduction in continuous drain current (169A versus 174A) and 6% increase in on-state resistance (5.3mOhm versus 5mOhm) fall within acceptable engineering tolerances for most power switching applications. Physical package differences (SUPER-220™ TO-273AA versus TO-220AB) require verification of PCB layout compatibility. Thermal and electrical performance remain equivalent at rated operating conditions.

Q: What is the significance of the package difference between SUPER-220™ (TO-273AA) and TO-220AB?

A: Both packages are through-hole mount configurations with three leads. The SUPER-220™ (TO-273AA) and TO-220AB differ in physical dimensions and thermal characteristics. The TO-220AB is the industry-standard package with wider availability and established PCB footprint conventions. Substitution requires confirmation that the TO-220AB footprint is compatible with the existing PCB design. Thermal performance remains equivalent at 330W maximum dissipation for both packages.

Q: Why is the IRF1405PBF recommended over the IRFBA1405P?

A: The IRF1405PBF is the manufacturer-recommended substitute because it maintains active product status with full availability and support, whereas the IRFBA1405P is obsolete. The IRF1405PBF achieves ROHS3 compliance, meeting modern regulatory requirements. Electrical performance is equivalent within acceptable engineering margins. Continued use of the obsolete IRFBA1405P presents supply chain risk and regulatory compliance challenges.

Q: Are there any performance trade-offs when substituting the IRF1405PBF for the IRFBA1405P?

A: The IRF1405PBF operates at 169A continuous drain current compared to the IRFBA1405P specification of 174A. For applications requiring the full 174A rating, thermal analysis and circuit design review are necessary to confirm adequate performance margin. On-state resistance increases from 5mOhm to 5.3mOhm, resulting in marginally higher conduction losses. These differences are negligible in most power switching applications and are offset by the active product status and regulatory compliance of the IRF1405PBF.

Q: What certifications and compliance standards apply to the IRF1405PBF?

A: The IRF1405PBF is ROHS3 compliant and REACH unaffected. The IRFBA1405P is RoHS non-compliant. Applications subject to RoHS directives or customer requirements for RoHS compliance must use the IRF1405PBF. Both devices carry ECCN EAR99 classification and HTSUS code 8541.29.0095.