IXFN50N50 Equivalent & Substitute Parts

Part Overview

The IXFN50N50 is an N-Channel 500V 50A MOSFET manufactured by IXYS in the HiPerFET™ series, housed in a SOT-227B chassis mount package. This device is classified as obsolete, indicating that direct procurement from original inventory may become limited. Substitute parts are necessary to ensure continued design support, maintain supply chain reliability, and provide access to active product alternatives with equivalent or enhanced electrical performance characteristics.

Substiute Parts

IXFN50N50

IXYSIn Stock: 3692IXFN50N50 Datasheet

Current PartRFQ

IXFN64N50P

IXYSIn Stock: 68936IXFN64N50P Datasheet

MFR RecommendedRFQ

APT5010JLL

Microchip TechnologyIn Stock: 68747APT5010JLL Datasheet

SimilarRFQ

APT5010JVFR

Microchip TechnologyIn Stock: 884APT5010JVFR Datasheet

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STE48NM50

STMicroelectronicsIn Stock: 1678STE48NM50 Datasheet

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STE53NC50

STMicroelectronicsIn Stock: 3551STE53NC50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IXFN50N50 is determined by the following critical parameters:

Primary Substitution Criteria:

• Drain to Source Voltage (Vdss): Must equal or exceed 500V
• Continuous Drain Current (Id): Must equal or exceed 50A at 25°C
• Mounting Type: Must be Chassis Mount
• Package Compatibility: SOT-227B (miniBLOC) or ISOTOP® packages are acceptable for electrical equivalence

Secondary Compatibility Factors:

• Rds On (Max): Lower values indicate improved performance
• Gate Charge (Qg): Lower values reduce switching losses
• Input Capacitance (Ciss): Affects gate drive requirements
• Power Dissipation (Max): Must support thermal requirements of the application

Substitute parts are classified into two categories:

Manufacturer Recommended: IXFN64N50P (IXYS) — Direct series upgrade with enhanced current and power ratings while maintaining identical voltage class and package family.

Similar Alternatives: APT5010JLL, APT5010JVFR (Microchip Technology), STE48NM50, STE53NC50 (STMicroelectronics) — Alternative manufacturers offering equivalent voltage and current specifications with different package geometries (ISOTOP®) and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

IXFN64N50P (Manufacturer Recommended Substitute)

The IXFN64N50P is the primary recommended substitute. This device maintains identical voltage rating (500V) and package family (SOT-227B miniBLOC) while providing enhanced current capacity (61A versus 50A) and superior power dissipation (700W versus 600W). The IXFN64N50P features reduced gate charge (150nC versus 330nC), resulting in lower switching losses and improved efficiency. Product status is Active with full ROHS3 compliance and unlimited moisture sensitivity rating. Inventory availability is substantial (68,856 units), ensuring supply continuity.

APT5010JLL (Microchip Technology Alternative)

The APT5010JLL provides equivalent 500V voltage rating with 41A continuous drain current. This device features the lowest input capacitance (4,360pF) among all alternatives, reducing gate drive complexity. The ISOTOP® package offers alternative thermal management characteristics. Product status is Active with ROHS3 compliance. This option is suitable for applications where gate drive optimization is prioritized and current requirements do not exceed 41A.

APT5010JVFR (Microchip Technology Alternative)

The APT5010JVFR maintains 500V rating with 44A continuous drain current in ISOTOP® package. This device exhibits the highest gate charge (470nC) among alternatives, requiring consideration in high-frequency switching applications. Product status is Active with ROHS3 compliance. Inventory availability is limited (812 units). This option is suitable for applications with moderate current requirements and lower switching frequency demands.

STE48NM50 (STMicroelectronics Alternative)

The STE48NM50 provides 550V voltage rating (exceeding the 500V requirement) with 48A continuous drain current. This device features the lowest input capacitance (3,700pF) and moderate gate charge (117nC), offering efficient gate drive characteristics. Power dissipation is rated at 450W. Product status is Active with ROHS3 compliance. The elevated voltage rating provides additional design margin for transient overvoltage conditions.

STE53NC50 (STMicroelectronics Alternative)

The STE53NC50 maintains 500V voltage rating with 53A continuous drain current, exceeding the original 50A specification. This device features the lowest Rds On (80mOhm) among all alternatives, providing superior conduction efficiency. Power dissipation is rated at 460W. Product status is Active with ROHS3 compliance. Inventory availability is adequate (3,500 units). This option is optimal for applications prioritizing conduction loss minimization.

Frequently Asked Questions (FAQ)

Q: Can the IXFN64N50P directly replace the IXFN50N50 without circuit modifications?

A: Yes. The IXFN64N50P maintains identical voltage rating (500V), package type (SOT-227B), and mounting configuration (Chassis Mount). The enhanced current rating (61A versus 50A) and reduced gate charge (150nC versus 330nC) provide improved performance without requiring circuit redesign. All electrical parameters are compatible with existing gate drive and thermal management designs.

Q: What are the package differences between SOT-227B and ISOTOP®?

A: Both package types are Chassis Mount configurations with identical electrical pin assignments. SOT-227B (miniBLOC) is the original package for IXFN50N50 and IXFN64N50P. ISOTOP® is an alternative package geometry used by Microchip Technology and STMicroelectronics. Physical dimensions and mounting hole patterns differ; mechanical redesign may be required for ISOTOP® substitution. Electrical performance and thermal characteristics are equivalent within the specified power dissipation ratings.

Q: Which substitute part offers the best thermal performance?

A: The IXFN64N50P provides the highest power dissipation rating (700W) among all alternatives, offering superior thermal headroom. The STE53NC50 and STE48NM50 provide 460W and 450W respectively. Selection depends on application thermal requirements and heat sink design. The IXFN64N50P is recommended for thermally demanding applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (IXFN64N50P, APT5010JLL, APT5010JVFR, STE48NM50, STE53NC50) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). All parts are REACH unaffected and classified under ECCN EAR99.

Q: What is the significance of gate charge differences among substitute parts?

A: Gate charge (Qg) directly affects switching losses and gate drive power requirements. Lower gate charge reduces switching losses and simplifies gate drive circuit design. The IXFN64N50P (150nC) offers the lowest gate charge, reducing switching losses by approximately 55% compared to the original IXFN50N50 (330nC). The APT5010JLL (95nC) provides the lowest gate charge overall, suitable for high-frequency applications. Higher gate charge values (APT5010JVFR at 470nC, STE53NC50 at 434nC) require more robust gate drive circuits.

Q: Can the IXFN50N50 be substituted with a lower current-rated device?

A: No. Substitute parts must equal or exceed the original 50A continuous drain current specification. Devices rated below 50A (such as APT5010JLL at 41A) are not suitable for direct substitution in applications requiring the full 50A rating. Current derating may be necessary if lower-rated alternatives are selected.

Q: What is the product status significance for long-term design support?

A: The IXFN50N50 is classified as Obsolete, indicating discontinued production and limited inventory availability. All recommended substitute parts are classified as Active, ensuring continued manufacturing, technical support, and long-term supply chain availability. Active status is essential for new designs and production continuity.