IXFX90N30 Equivalent & Substitute Parts

Part Overview

The IXFX90N30 is an N-Channel MOSFET rated for 300V drain-to-source voltage with 90A continuous drain current at 25°C. This device is manufactured by IXYS in the HiPerFET™ series and is housed in a TO-247-3 through-hole package. The part is currently listed as obsolete, necessitating identification of equivalent and substitute components for ongoing applications and new designs. Substitute parts are selected based on matching or exceeding critical electrical parameters while maintaining compatible package configurations.

Substiute Parts

IXFX90N30

IXYSIn Stock: 26475IXFX90N30 Datasheet

Current PartRFQ

IXFX140N30P

IXYSIn Stock: 86918IXFX140N30P Datasheet

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IRFP4332PBF

Infineon TechnologiesIn Stock: 19106IRFP4332PBF Datasheet

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IRFP4868PBF

Infineon TechnologiesIn Stock: 54628IRFP4868PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IXFX90N30 are identified based on the following critical parameters:

Primary Matching Criteria:

• Drain-to-Source Voltage (Vdss): 300V minimum
• Continuous Drain Current (Id): 90A or greater
• Package Type: TO-247-3 or compatible through-hole variant
• On-State Resistance (Rds On): Comparable or lower values
• Operating Temperature Range: Minimum -55°C to 150°C

Substitution Logic: Parts are grouped into two categories: direct upgrades (higher current capability with same voltage rating) and functional equivalents (matching voltage and current specifications with different manufacturers). All substitute parts maintain the 300V Vdss rating or operate at reduced voltage with equivalent or superior current handling. Package compatibility is maintained across all substitutes through TO-247-3 or TO-247AC configurations.

Parameter Comparison

Engineering Selection Recommendations

IXFX140N30P (IXYS): This part is the primary substitute for the IXFX90N30. It maintains the same 300V Vdss rating and TO-247-3 package configuration while providing 140A continuous drain current, exceeding the original 90A specification. The IXFX140N30P is currently in active product status and is ROHS3 compliant. The lower on-state resistance (24 mOhm versus 33 mOhm) and reduced gate charge (185 nC versus 360 nC) provide improved switching performance. This part is suitable for direct replacement in applications requiring equivalent or higher current capacity.

IRFP4868PBF (Infineon Technologies): This part matches the 300V Vdss rating and provides 70A continuous drain current. It is housed in a TO-247AC package, which is mechanically and electrically compatible with TO-247-3 configurations. The IRFP4868PBF carries a "Not For New Designs" status, limiting its use to legacy system maintenance and repair applications. On-state resistance and gate charge characteristics are comparable to the original part. ROHS3 compliance is confirmed.

IRFP4332PBF (Infineon Technologies): This part operates at 250V Vdss with 57A continuous drain current. It is suitable only for applications where the 300V voltage rating is not a critical requirement. The TO-247AC package is compatible with the original through-hole configuration. The IRFP4332PBF is in active product status and ROHS3 compliant. Lower gate charge (150 nC) and power dissipation (360W) characteristics may benefit thermally constrained designs operating below 300V.

Frequently Asked Questions (FAQ)

Q: Can the IXFX140N30P directly replace the IXFX90N30 in all applications?

A: The IXFX140N30P is a direct replacement for the IXFX90N30 in applications where the circuit design accommodates higher current capability. Both parts share identical 300V Vdss ratings, TO-247-3 package configurations, and operating temperature ranges. The IXFX140N30P's superior current rating (140A versus 90A) and lower on-state resistance provide performance benefits without introducing compatibility issues.

Q: What is the difference between TO-247-3 and TO-247AC packages?

A: TO-247-3 and TO-247AC are both through-hole packages with three leads (Gate, Drain, Source) and are mechanically and electrically compatible. The primary difference is in manufacturing standards and thermal characteristics. Both packages are suitable for applications requiring the IXFX90N30 footprint.

Q: Is the IRFP4868PBF suitable for new designs?

A: The IRFP4868PBF carries a "Not For New Designs" product status. This part is available for legacy system support and repair applications only. For new designs, the IXFX140N30P or IRFP4332PBF are recommended alternatives.

Q: Can the IRFP4332PBF be used in place of the IXFX90N30?

A: The IRFP4332PBF operates at 250V Vdss, which is 50V lower than the IXFX90N30's 300V rating. This part is suitable only for applications where the maximum drain-to-source voltage does not exceed 250V. Current capability (57A) is also lower than the original specification (90A). Verify circuit voltage requirements before selecting this substitute.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed (IXFX140N30P, IRFP4868PBF, and IRFP4332PBF) are ROHS3 compliant and REACH unaffected. These certifications match the original IXFX90N30 specifications.

Q: How do gate charge differences affect circuit performance?

A: Gate charge (Qg) determines the energy required to switch the MOSFET on and off. The IXFX90N30 requires 360 nC at 10V, while the IXFX140N30P requires only 185 nC. Lower gate charge reduces switching losses and allows faster switching speeds. The IRFP4868PBF (270 nC) and IRFP4332PBF (150 nC) present intermediate options. Circuit design must accommodate the gate drive characteristics of the selected substitute.

Q: Are there inventory considerations for substitute selection?

A: The IXFX140N30P has the highest inventory availability (86,866 pieces), followed by the IRFP4868PBF (54,569 pieces) and IRFP4332PBF (19,000 pieces). Inventory levels may influence selection for high-volume production requirements.