IXFN120N20 Equivalent & Substitute Parts

Part Overview

The IXFN120N20 is an N-Channel MOSFET rated for 200V drain-to-source voltage with 120A continuous drain current at 25°C. This device is housed in a SOT-227B chassis mount package and delivers 600W maximum power dissipation. The part operates across a temperature range of -55°C to 150°C and belongs to the HiPerFET™ series from IXYS.

The IXFN120N20 carries a product status of "Not For New Designs," indicating that IXYS has transitioned this component out of active development. For new circuit designs and long-term production requirements, identifying equivalent or substitute parts with active product status is necessary to ensure supply chain continuity and access to manufacturer support.

Substiute Parts

IXFN120N20

IXYSIn Stock: 68597IXFN120N20 Datasheet

Current PartRFQ

IXFN210N20P

IXYSIn Stock: 991IXFN210N20P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFN120N20 is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Drain-to-Source Voltage (Vdss): 200V
• Package Type: SOT-227B (miniBLOC) chassis mount
• FET Type: N-Channel MOSFET
• Technology: Metal Oxide Semiconductor

Allowable Parameter Variations: Substitute parts may exceed the original specifications in the following parameters without compromising circuit compatibility:

• Continuous Drain Current (Id): Substitute must equal or exceed 120A
• On-State Resistance (Rds On): Substitute must equal or be lower than 17mOhm
• Power Dissipation: Substitute must equal or exceed 600W
• Operating Temperature Range: Substitute must encompass or extend the -55°C to 150°C range
• Gate Charge (Qg): Substitute specifications are acceptable if within the same device family

The IXFN210N20P meets all mandatory matching criteria and provides enhanced electrical performance characteristics, making it a valid substitute for the IXFN120N20.

Parameter Comparison

Engineering Selection Recommendations

IXFN210N20P as Primary Substitute:

The IXFN210N20P is the appropriate substitute for the IXFN120N20 based on the following engineering criteria:

1. Electrical Compatibility: Both devices share identical drain-to-source voltage ratings (200V) and operate within the same voltage class. The IXFN210N20P provides higher continuous drain current (188A versus 120A) and lower on-state resistance (10.5mOhm versus 17mOhm), delivering improved performance margins without introducing incompatibility.

2. Package Compatibility: Both parts utilize the SOT-227B (miniBLOC) chassis mount package, ensuring mechanical and thermal interface compatibility with existing PCB layouts and heat sink assemblies.

3. Product Status: The IXFN210N20P carries an "Active" product status, confirming ongoing manufacturer support, availability, and compliance with current industry standards. This status directly addresses the obsolescence concern associated with the IXFN120N20.

4. Regulatory Compliance: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for new designs and production environments.

5. Temperature Performance: The IXFN210N20P extends the maximum operating temperature to 175°C, compared to 150°C for the IXFN120N20, providing additional thermal margin in high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the IXFN210N20P be used as a direct replacement for the IXFN120N20 in existing designs?

A: Yes. The IXFN210N20P is mechanically and electrically compatible with the IXFN120N20. Both devices share the same SOT-227B package, identical 200V voltage rating, and compatible gate drive characteristics. The substitute part provides superior electrical performance with higher current capacity and lower on-state resistance.

Q: What are the key differences between the IXFN120N20 and IXFN210N20P?

A: The primary differences are continuous drain current (120A versus 188A), on-state resistance (17mOhm versus 10.5mOhm), power dissipation capability (600W versus 1070W), and maximum operating temperature (150°C versus 175°C). The IXFN210N20P also features lower gate charge (255nC versus 360nC), resulting in faster switching characteristics.

Q: Are there any thermal management considerations when substituting the IXFN210N20P?

A: The IXFN210N20P has higher power dissipation capability (1070W versus 600W) and operates at higher temperatures (175°C maximum). Existing thermal designs for the IXFN120N20 remain valid for the substitute part. The improved thermal performance of the IXFN210N20P may allow for reduced heat sink requirements or improved system reliability in thermally constrained applications.

Q: Do both parts require identical gate drive circuits?

A: Yes. Both the IXFN120N20 and IXFN210N20P accept ±20V maximum gate voltage and have compatible gate threshold voltage specifications (4V and 4.5V respectively). Existing gate drive circuits designed for the IXFN120N20 operate without modification on the IXFN210N20P.

Q: What is the significance of the "Not For New Designs" status on the IXFN120N20?

A: This status indicates that IXYS has discontinued active development and marketing of the IXFN120N20. While existing inventory may be available, the manufacturer does not recommend this part for new circuit designs. The IXFN210N20P, with "Active" status, is the recommended choice for new development to ensure long-term supply chain stability and manufacturer support.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the IXFN120N20 and IXFN210N20P are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: How does the input capacitance difference affect circuit design?

A: The IXFN210N20P has higher input capacitance (18600pF versus 9100pF). This parameter affects gate charge and switching speed. The lower gate charge of the IXFN210N20P (255nC versus 360nC) partially compensates for the higher capacitance, resulting in comparable or improved switching performance. Gate drive circuits designed for the IXFN120N20 accommodate this variation without circuit modification.