IXFR25N90 Equivalent & Substitute Parts

Part Overview

The IXFR25N90 is an N-Channel 900 V, 25A (Tc) MOSFET manufactured by IXYS in the ISOPLUS247™ package. This device is designed for high-voltage switching applications requiring through-hole mounting. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning. Active alternatives with compatible electrical and mechanical specifications are available to support ongoing production and maintenance requirements.

Substiute Parts

IXFR25N90

IXYSIn Stock: 1136IXFR25N90 Datasheet

Current PartRFQ

IXFR40N90P

IXYSIn Stock: 766IXFR40N90P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFR25N90 is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 900 V Drain to Source Voltage (Vdss) rating to ensure safe operation in the same circuit topology without exceeding device voltage limits.

Package Compatibility: The substitute must use the ISOPLUS247™ package in TO-247-3 configuration to ensure mechanical fit and thermal interface compatibility with existing PCB layouts and heat sink assemblies.

Mounting Type: Through-hole mounting is required to maintain compatibility with existing board designs and assembly processes.

Manufacturer Consistency: IXYS manufacture ensures consistency in device characteristics, thermal performance, and long-term availability within the same product family.

Current Rating Consideration: While the IXFR25N90 specifies 25A continuous drain current, substitute parts with equal or greater current ratings at the same voltage and package are functionally compatible, provided circuit design accounts for any differences in on-resistance and thermal dissipation.

The IXFR40N90P meets all substitution criteria while offering active product status and enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

IXFR40N90P is the qualified substitute for IXFR25N90 applications. This selection is based on the following engineering criteria:

Voltage and Package Equivalence: Both devices share identical 900 V Vdss rating and ISOPLUS247™ TO-247-3 package configuration, ensuring direct mechanical and electrical compatibility in existing circuit designs.

Active Product Status: The IXFR40N90P maintains active product status with confirmed inventory availability, eliminating obsolescence risk associated with the IXFR25N90.

Regulatory Compliance: The IXFR40N90P is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for new designs and production runs.

Thermal Performance: The IXFR40N90P specifies 300W maximum power dissipation at Tc, providing adequate thermal headroom for high-voltage switching applications.

Current Rating Consideration: The IXFR40N90P specifies 21A continuous drain current, which is lower than the IXFR25N90 rating of 25A. Circuit designs operating at or near 25A continuous current require thermal analysis to confirm the substitute device operates within safe junction temperature limits under worst-case conditions.

Frequently Asked Questions (FAQ)

Q: Can the IXFR40N90P directly replace the IXFR25N90 in existing designs?

A: Yes, for applications operating below 21A continuous drain current. Both devices share identical 900 V voltage rating and ISOPLUS247™ package configuration. Applications requiring the full 25A rating of the original device require thermal analysis of the substitute to confirm safe operation.

Q: What is the primary reason for substitution?

A: The IXFR25N90 is classified as obsolete. The IXFR40N90P is an active product from the same manufacturer with compatible electrical and mechanical specifications, ensuring long-term availability and supply chain continuity.

Q: Are there any package differences between these devices?

A: No. Both the IXFR25N90 and IXFR40N90P use the ISOPLUS247™ package in TO-247-3 configuration with through-hole mounting. PCB layouts and heat sink interfaces are directly compatible.

Q: What are the key electrical differences?

A: The primary difference is continuous drain current rating: IXFR25N90 specifies 25A (Tc), while IXFR40N90P specifies 21A (Tc). Both maintain 900 V Vdss. The IXFR40N90P provides additional specifications including on-resistance (230 mOhm @ 20A, 10V), gate charge (230 nC @ 10V), and operating temperature range (-55°C to 150°C Tj).

Q: Is the IXFR40N90P suitable for new designs?

A: Yes. The IXFR40N90P is an active product with ROHS3 compliance and full regulatory support, making it appropriate for new product development and long-term production.

Q: What compliance certifications apply to the substitute part?

A: The IXFR40N90P is ROHS3 compliant, REACH unaffected, and carries EAR99 ECCN classification with HTSUS code 8541.29.0095, matching the regulatory profile of the original device.