IXTA98N075T Equivalent & Substitute Parts

Part Overview

The IXTA98N075T is an N-Channel MOSFET rated for 75V drain-to-source voltage with 98A continuous drain current at 25°C. This device is manufactured by IXYS in a Surface Mount TO-263AA package and is classified as Obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Substiute Parts

IXTA98N075T

IXYSIn Stock: 777IXTA98N075T Datasheet

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IXTA90N075T2

IXYSIn Stock: 3416IXTA90N075T2 Datasheet

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STB75NF75LT4

STMicroelectronicsIn Stock: 5850STB75NF75LT4 Datasheet

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STB75NF75T4

STMicroelectronicsIn Stock: 43499STB75NF75T4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXTA98N075T is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss): Must equal or exceed 75V
• Continuous Drain Current (Id) @ 25°C: Must meet or exceed 98A
• Gate-Source Voltage (Vgs): Must accommodate ±20V maximum rating
• Operating Temperature Range: Must span -55°C to 175°C (TJ)
• Technology: N-Channel MOSFET (Metal Oxide)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), or TO-263AB

Regulatory & Compliance Criteria:

• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

Substitute parts are grouped based on their ability to satisfy these parameters while maintaining functional equivalence in circuit applications. Parts with lower continuous drain current ratings or reduced voltage ratings do not qualify as direct substitutes but may serve as alternatives in current-limited or lower-voltage applications.

Parameter Comparison

Engineering Selection Recommendations

IXTA90N075T2 (IXYS)

The IXTA90N075T2 is an Active product from the same manufacturer (IXYS) with identical voltage rating (75V) and package type (TO-263AA). This part carries a continuous drain current rating of 90A, which is 8A lower than the IXTA98N075T. The IXTA90N075T2 maintains full compliance with ROHS3 and MSL 1 specifications. This substitute is suitable for applications where the 90A rating satisfies circuit requirements and where the TO-263AA package footprint is maintained.

STB75NF75T4 (STMicroelectronics)

The STB75NF75T4 is an Active product with identical voltage rating (75V) and continuous drain current rating of 80A. This part uses the D2PAK package, which is mechanically compatible with the original TO-263-3 and D2PAK specifications. The STB75NF75T4 provides higher power dissipation capability (300W vs. 230W) and maintains full ROHS3 and MSL 1 compliance. This substitute is suitable for applications where the 80A rating is acceptable and where D2PAK package compatibility is confirmed.

STB75NF75LT4 (STMicroelectronics)

The STB75NF75LT4 is an Active product with identical voltage rating (75V) and continuous drain current rating of 75A. This part uses the D2PAK package and provides the highest power dissipation capability (300W). The STB75NF75LT4 maintains full ROHS3 and MSL 1 compliance. This substitute is suitable for applications where the 75A rating is acceptable and where D2PAK package compatibility is confirmed.

All substitute parts maintain the required operating temperature range (-55°C to 175°C), regulatory compliance status, and moisture sensitivity level of the original IXTA98N075T.

Frequently Asked Questions (FAQ)

Q: Can the IXTA90N075T2 directly replace the IXTA98N075T in all applications?

A: The IXTA90N075T2 can replace the IXTA98N075T where the circuit design accommodates an 8A reduction in continuous drain current. Both parts share identical voltage ratings (75V), gate-source voltage limits (±20V), operating temperature range (-55°C to 175°C), and package type (TO-263AA). Circuit analysis is required to confirm that the 90A rating is sufficient for the intended application.

Q: What is the difference between TO-263AA and D2PAK packages?

A: TO-263AA and D2PAK are mechanically compatible package designations for surface mount devices with 2 leads plus a tab. Both packages are listed in the IXTA98N075T specifications as acceptable alternatives. The STMicroelectronics parts (STB75NF75T4 and STB75NF75LT4) use the D2PAK designation and are physically compatible with TO-263-3 and TO-263AB footprints.

Q: Why does the IXTA98N075T show as Obsolete?

A: The IXTA98N075T is classified as Obsolete by the manufacturer, indicating that it is no longer in active production. All substitute parts listed (IXTA90N075T2, STB75NF75T4, STB75NF75LT4) are Active products with confirmed ongoing availability and support.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 Compliant status and MSL 1 (Unlimited) moisture sensitivity level, matching the regulatory compliance of the original IXTA98N075T.

Q: What is the impact of lower continuous drain current ratings in substitute parts?

A: Substitute parts with lower continuous drain current ratings (IXTA90N075T2 at 90A, STB75NF75T4 at 80A, STB75NF75LT4 at 75A) require circuit analysis to confirm that the reduced current capacity does not exceed thermal or electrical limits in the intended application. Power dissipation calculations based on actual operating current and on-resistance must be performed.

Q: Can I use STMicroelectronics parts as substitutes for IXYS parts?

A: Yes. The STMicroelectronics STB75NF75T4 and STB75NF75LT4 parts meet the electrical and mechanical compatibility criteria for substitution. Both maintain the 75V voltage rating, Surface Mount mounting type, and D2PAK package compatibility. Circuit validation is required to confirm that the specific current and power dissipation ratings are acceptable for the application.

Q: What parameters must be verified before selecting a substitute part?

A: The following parameters must be verified: (1) Continuous drain current requirement at 25°C, (2) Maximum power dissipation in the application, (3) Gate-source voltage drive capability, (4) Package footprint compatibility (TO-263AA vs. D2PAK), and (5) Thermal management capability of the PCB design.