IXFN73N30 N-Channel MOSFET 300V 73A Equivalent & Substitute Parts

Part Overview

The IXFN73N30 is an N-Channel MOSFET manufactured by IXYS, rated for 300V drain-to-source voltage with 73A continuous drain current at 25°C. This device is housed in a SOT-227B chassis mount package and delivers 500W maximum power dissipation. The part belongs to the HiPerFET™ series and carries a product status of Not For New Designs, indicating that while functional and available in inventory, IXYS has discontinued this model from their active product line. Identifying equivalent substitute parts is necessary for applications requiring continued component availability, design flexibility, or performance optimization within the same electrical and mechanical specifications.

Substiute Parts

IXFN73N30

IXYSIn Stock: 2980IXFN73N30 Datasheet

Current PartRFQ

IXFN102N30P

IXYSIn Stock: 988IXFN102N30P Datasheet

SimilarRFQ

APT30M40JVFR

Microchip TechnologyIn Stock: 717APT30M40JVFR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFN73N30 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Drain-to-Source Voltage (Vdss): 300V minimum
• Mounting Type: Chassis Mount
• Package Family: SOT-227B / miniBLOC compatible
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS3 Compliance

Performance Compatibility Criteria:

• Continuous Drain Current (Id): Equal to or greater than 73A
• On-State Resistance (Rds On): Equal to or lower than 45mOhm (lower resistance indicates improved performance)
• Gate Charge (Qg): Lower values reduce switching losses
• Power Dissipation: Equal to or greater than 500W

The two substitute parts identified—IXFN102N30P and APT30M40JVFR—meet all mandatory equivalence criteria and offer equal or superior performance characteristics. Both devices maintain the same voltage rating, chassis mount configuration, and temperature operating range while providing enhanced current handling and reduced on-state resistance.

Parameter Comparison

Engineering Selection Recommendations

IXFN102N30P (IXYS)

The IXFN102N30P is a direct substitute within the same IXYS HiPerFET™ series family. This part maintains identical voltage and package specifications while delivering superior electrical performance: 88A continuous drain current (versus 73A), 33mOhm on-state resistance (versus 45mOhm), and 600W power dissipation (versus 500W). The IXFN102N30P carries Active product status, ensuring long-term availability and continued manufacturer support. Gate charge is reduced to 224nC, resulting in lower switching losses. This substitute is optimal for applications requiring enhanced current capacity and improved thermal performance within the same form factor. Inventory availability is confirmed at 972 pieces.

APT30M40JVFR (Microchip Technology)

The APT30M40JVFR represents a cross-manufacturer substitute from Microchip Technology's POWER MOS V® series. This device maintains the 300V voltage rating and chassis mount configuration while delivering 70A continuous drain current and 40mOhm on-state resistance. The APT30M40JVFR is housed in an ISOTOP® package variant compatible with SOT-227-4 / miniBLOC footprints. This part carries Active product status and full RoHS3 and REACH compliance. The higher gate charge (425nC) and input capacitance (10200pF) indicate different switching characteristics suitable for applications with different drive requirements. Inventory availability is confirmed at 681 pieces.

Both substitutes satisfy all mandatory electrical and mechanical equivalence criteria and provide active product status, ensuring design continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the IXFN102N30P directly replace the IXFN73N30 in existing designs?

A: Yes. Both devices share identical drain-to-source voltage (300V), operating temperature range (-55°C to 150°C), and SOT-227B chassis mount package configuration. The IXFN102N30P delivers equal or superior performance across all critical parameters: higher continuous drain current (88A versus 73A), lower on-state resistance (33mOhm versus 45mOhm), and higher power dissipation rating (600W versus 500W). No circuit modifications are required for direct substitution.

Q: What are the key differences between the IXFN102N30P and APT30M40JVFR?

A: Both parts maintain the 300V voltage rating and chassis mount configuration. The IXFN102N30P (IXYS) delivers higher continuous drain current (88A versus 70A) and lower on-state resistance (33mOhm versus 40mOhm), making it suitable for higher current applications. The APT30M40JVFR (Microchip) features lower gate charge (425nC versus 224nC) and higher input capacitance (10200pF versus 7500pF), indicating different switching dynamics. Selection depends on application current requirements and drive circuit characteristics.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both IXFN102N30P and APT30M40JVFR carry ROHS3 Compliant certification and REACH Unaffected status, matching the compliance profile of the original IXFN73N30. Both parts are suitable for applications requiring environmental and regulatory compliance.

Q: What is the significance of the IXFN73N30 being marked "Not For New Designs"?

A: This product status indicates that IXYS has discontinued the IXFN73N30 from their active product line and does not recommend its use in new circuit designs. Existing inventory remains available (2900 pieces), but long-term supply cannot be guaranteed. The identified substitutes—both carrying Active product status—provide continuity for new designs and future production requirements.

Q: Are the package footprints identical between all three parts?

A: Yes. All three devices use the SOT-227-4 / miniBLOC chassis mount package configuration. The IXFN73N30 and IXFN102N30P use the SOT-227B variant, while the APT30M40JVFR uses the ISOTOP® variant. Both variants are mechanically and electrically compatible within the SOT-227-4 / miniBLOC footprint family, allowing direct PCB substitution without layout modifications.

Q: Which substitute offers the best thermal performance?

A: The IXFN102N30P offers the highest power dissipation rating at 600W (Tc), compared to 500W for the IXFN73N30 and 450W for the APT30M40JVFR. Combined with its lowest on-state resistance (33mOhm), the IXFN102N30P generates the least heat during operation, providing superior thermal performance for high-current applications.

Q: Can I use the APT30M40JVFR if my application requires 73A continuous current?

A: The APT30M40JVFR is rated for 70A continuous drain current, which is below the 73A requirement of the original IXFN73N30. While the difference is marginal (approximately 4%), applications with strict 73A continuous current requirements should use the IXFN102N30P (88A rating) to maintain design margin and reliability.