IXTH280N055T Equivalent & Substitute Parts

Part Overview

The IXTH280N055T is an N-Channel MOSFET manufactured by IXYS, rated for 55V drain-to-source voltage with 280A continuous drain current at 25°C. This device is housed in a TO-247 through-hole package and is part of the TrenchMV™ series. The part is currently listed as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

IXTH280N055T

IXYSIn Stock: 729IXTH280N055T Datasheet

Current PartRFQ

IRFP3077PBF

Infineon TechnologiesIn Stock: 16874IRFP3077PBF Datasheet

SimilarRFQ

IRFP7537PBF

Infineon TechnologiesIn Stock: 23731IRFP7537PBF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXTH280N055T is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The main part operates at 55V Vdss. Substitute parts must maintain equal or higher voltage ratings to ensure safe operation within the same circuit topology.

Current Handling Capability: The 280A continuous drain current represents a primary design constraint. Substitute parts with lower current ratings may not support the full load requirements of the original application.

On-State Resistance (Rds On): The 3.2 mOhm specification directly impacts power dissipation and thermal performance. Substitute parts with comparable or lower Rds On values maintain equivalent efficiency characteristics.

Gate Charge and Input Capacitance: These parameters affect switching speed and gate drive circuit requirements. Substitutes with similar gate charge and input capacitance values ensure compatible drive circuit performance.

Package and Mounting: The TO-247-3 through-hole package is a mechanical requirement for board-level compatibility and thermal management.

Operating Temperature Range: The -55°C to 175°C specification must be maintained or exceeded in substitute parts.

Parameter Comparison

Engineering Selection Recommendations

IRFP7537PBF Substitution Considerations:

The IRFP7537PBF is an active product manufactured by Infineon Technologies with ROHS3 compliance. It provides a 60V voltage rating, which exceeds the 55V requirement of the IXTH280N055T. However, the continuous drain current rating of 172A is significantly lower than the original 280A specification. This part is suitable only for applications where the actual operating current does not exceed 172A. The on-state resistance of 3.3 mOhm is comparable to the original specification. Gate charge and input capacitance values are within acceptable ranges for compatible gate drive circuits.

IRFP3077PBF Substitution Considerations:

The IRFP3077PBF is an active product manufactured by Infineon Technologies with ROHS3 compliance. It provides a 75V voltage rating, exceeding the 55V requirement. The continuous drain current rating of 120A is substantially lower than the original 280A specification. This part is suitable only for applications where the actual operating current does not exceed 120A. The on-state resistance of 3.3 mOhm is comparable to the original specification. Gate charge and input capacitance values support compatible gate drive circuit operation.

Product Status and Compliance:

Both substitute parts are active products with current manufacturing support and ROHS3 compliance, providing advantages over the obsolete IXTH280N055T in terms of long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the IRFP7537PBF or IRFP3077PBF directly replace the IXTH280N055T in all applications?

A: Direct replacement is limited by current rating. The IRFP7537PBF supports up to 172A continuous drain current, and the IRFP3077PBF supports up to 120A. If the original application requires the full 280A capability of the IXTH280N055T, neither substitute part is suitable. Substitution is valid only when actual operating current remains below the substitute part's rating.

Q: Are the voltage ratings of the substitute parts compatible?

A: Yes. Both substitute parts have higher voltage ratings (60V and 75V respectively) than the original 55V specification. Higher voltage ratings provide additional design margin and are compatible with circuits designed for 55V operation.

Q: How do the on-state resistance values compare?

A: The on-state resistance values are comparable across all three parts, ranging from 3.2 to 3.3 mOhm. This similarity ensures equivalent power dissipation characteristics and thermal performance in applications operating within the current limits of the substitute parts.

Q: Are the gate drive requirements the same?

A: Gate charge and input capacitance values are similar across all three parts. The IRFP7537PBF and IRFP3077PBF have gate charge values of 210 nC and 220 nC respectively, compared to 200 nC for the IXTH280N055T. These differences are within acceptable tolerances for standard gate drive circuits designed for the original part.

Q: What is the impact of the lower power dissipation ratings in the substitute parts?

A: The substitute parts have lower maximum power dissipation ratings (230W and 340W) compared to the original 550W specification. This reflects their lower current ratings. In applications operating within the current limits of the substitute parts, actual power dissipation will be lower than the original design, and the lower maximum ratings are not a limiting factor.

Q: Are there any compliance or availability advantages to using the substitute parts?

A: Yes. Both IRFP7537PBF and IRFP3077PBF are active products with ROHS3 compliance, providing advantages in terms of long-term availability, regulatory alignment, and supply chain continuity compared to the obsolete IXTH280N055T.

Q: What is the package compatibility between these parts?

A: All three parts use the TO-247-3 through-hole package, ensuring mechanical and thermal compatibility at the board level. No package modifications are required for substitution.