IXFN64N50PD2 Equivalent & Substitute Parts

Part Overview

The IXFN64N50PD2 is an N-Channel MOSFET rated for 500V drain-to-source voltage with 52A continuous drain current in a chassis-mount SOT-227B package. Manufactured by IXYS under the PolarHV™ series, this device is designed for high-voltage switching applications requiring robust thermal management through direct chassis mounting.

The IXFN64N50PD2 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

IXFN64N50PD2

IXYSIn Stock: 68857IXFN64N50PD2 Datasheet

Current PartRFQ

APT50M75JLLU2

Microchip TechnologyIn Stock: 1066APT50M75JLLU2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFN64N50PD2 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Drain-to-Source Voltage (Vdss): 500V minimum
• Continuous Drain Current (Id): 51A or greater at 25°C
• On-State Resistance (Rds On): Performance within acceptable operating margins
• Gate Threshold Voltage (Vgs(th)): 5V maximum
• Operating Temperature Range: -55°C to 150°C minimum
• Gate Charge (Qg): Switching performance compatibility

Mechanical Equivalence Criteria:

• Package Type: SOT-227 or SOT-227B, miniBLOC
• Mounting Type: Chassis Mount
• Pin Configuration: Compatible with SOT-227-4 footprint

Compliance Criteria:

• RoHS3 Compliance required
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The APT50M75JLLU2 meets all substitution criteria and is classified as an active product, providing supply chain continuity for the obsolete IXFN64N50PD2.

Parameter Comparison

Engineering Selection Recommendations

APT50M75JLLU2 as Primary Substitute:

The APT50M75JLLU2 manufactured by Microchip Technology is the qualified substitute for the obsolete IXFN64N50PD2. Selection of this part is based on the following engineering factors:

Product Status: The APT50M75JLLU2 is classified as active, ensuring long-term availability and supply chain stability compared to the obsolete IXFN64N50PD2.

Electrical Compatibility: Both devices share identical voltage ratings (500V Vdss) and equivalent current ratings (52A vs. 51A), with the substitute demonstrating superior on-state resistance performance (75 mOhm vs. 85 mOhm). Gate charge is lower in the substitute (123 nC vs. 186 nC), resulting in improved switching efficiency.

Mechanical Compatibility: Both parts utilize the SOT-227-4 miniBLOC chassis-mount package, ensuring direct footprint compatibility without PCB redesign.

Regulatory Compliance: Both devices maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, satisfying environmental and regulatory requirements for equivalent component substitution.

Thermal Considerations: The substitute exhibits lower maximum power dissipation (290W vs. 625W). Applications requiring the full 625W thermal capability of the original part require thermal analysis to confirm the substitute's adequacy for the specific use case.

Frequently Asked Questions (FAQ)

Q: Can the APT50M75JLLU2 directly replace the IXFN64N50PD2 without circuit modifications?

A: Yes. Both devices share identical voltage ratings (500V), equivalent current ratings (51A vs. 52A), matching gate threshold voltages (5V), and identical package footprints (SOT-227-4, miniBLOC). No circuit modifications are required for direct substitution.

Q: What is the significance of the lower gate charge in the APT50M75JLLU2?

A: The APT50M75JLLU2 exhibits lower gate charge (123 nC vs. 186 nC at 10V), resulting in faster switching transitions and reduced gate drive power requirements. This characteristic improves overall circuit efficiency without compromising functional compatibility.

Q: Are there differences in on-state resistance between these parts?

A: Yes. The APT50M75JLLU2 demonstrates lower on-state resistance (75 mOhm @ 25.5A, 10V) compared to the IXFN64N50PD2 (85 mOhm @ 32A, 10V). Lower on-state resistance reduces conduction losses and heat generation during operation.

Q: How do the power dissipation ratings differ?

A: The IXFN64N50PD2 is rated for 625W maximum power dissipation, while the APT50M75JLLU2 is rated for 290W. Applications operating near the original part's maximum thermal limits require verification that the substitute's thermal capability is adequate for the specific operating conditions.

Q: Are both parts RoHS compliant?

A: Yes. Both the IXFN64N50PD2 and APT50M75JLLU2 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the moisture sensitivity level for both parts?

A: Both devices are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Is the package footprint identical between these parts?

A: Yes. Both parts utilize the SOT-227-4 miniBLOC chassis-mount package with identical pin configurations, enabling direct PCB footprint compatibility.

Q: Why is the IXFN64N50PD2 classified as obsolete?

A: The IXFN64N50PD2 has been discontinued by IXYS. The APT50M75JLLU2 from Microchip Technology is an active product offering equivalent electrical and mechanical specifications with improved performance characteristics and assured long-term availability.