IXTQ240N055T Equivalent & Substitute Parts

Part Overview

The IXTQ240N055T is an N-Channel MOSFET manufactured by IXYS, rated for 55V drain-to-source voltage with 240A continuous drain current at 25°C. This device is packaged in a TO-3P through-hole configuration and is part of the TrenchMV™ series. The product is currently obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating different package formats.

Substiute Parts

IXTQ240N055T

IXYSIn Stock: 1136IXTQ240N055T Datasheet

Current PartRFQ

IXTH260N055T2

IXYSIn Stock: 5437IXTH260N055T2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXTQ240N055T is determined by strict electrical and mechanical compatibility criteria. The primary substitute identified is the IXTH260N055T2, which maintains the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): 55V (identical)
• Gate Threshold Voltage (Vgs(th)): 4V @ 250µA (identical)
• Maximum Gate Voltage (Vgs Max): ±20V (identical)
• Operating Temperature Range: -55°C to 175°C (identical)
• Power Dissipation: 480W (identical)

Current and Resistance Characteristics: The IXTH260N055T2 provides 260A continuous drain current, exceeding the 240A specification of the IXTQ240N055T. The on-state resistance of 3.3mOhm at 50A, 10V is lower than the 3.6mOhm specification at 25A, 10V, indicating improved performance characteristics.

Mechanical Compatibility: The primary difference is the package format: IXTH260N055T2 uses TO-247 (IXTH) packaging instead of TO-3P. Both are through-hole configurations suitable for PCB mounting, though pin layouts and thermal characteristics differ.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The IXTQ240N055T is classified as obsolete. The IXTH260N055T2 is an active product from the same manufacturer (IXYS), ensuring continued availability and manufacturing support. Selection of the active substitute part eliminates long-term supply chain risk.

Compliance and Certification: Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory compliance across applications. The IXTH260N055T2 carries RoHS3 compliance certification, providing additional environmental compliance assurance not specified for the obsolete IXTQ240N055T.

Electrical Performance: The IXTH260N055T2 delivers superior electrical characteristics: 260A continuous drain current versus 240A, lower on-state resistance (3.3mOhm versus 3.6mOhm), and reduced gate charge (140nC versus 170nC). These improvements result in lower power dissipation and faster switching characteristics while maintaining identical voltage ratings and thermal specifications.

Package Transition: Substitution requires PCB layout modification due to package format change from TO-3P to TO-247 (IXTH). Both packages are through-hole configurations with identical thermal dissipation capability (480W). Pin configuration and mounting hole spacing differ and must be accommodated in mechanical design.

Frequently Asked Questions (FAQ)

Q: Can the IXTH260N055T2 directly replace the IXTQ240N055T without circuit modification?

A: Electrical substitution is valid based on identical voltage ratings, threshold voltage, and operating temperature range. However, mechanical substitution requires PCB layout changes due to different package formats (TO-247 versus TO-3P). Pin assignments and mounting hole positions differ between these packages.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: Drain-to-Source Voltage (Vdss) of 55V, Gate Threshold Voltage (Vgs(th)) of 4V at 250µA, Maximum Gate Voltage (Vgs Max) of ±20V, and Operating Temperature Range of -55°C to 175°C. All these parameters are identical between the main part and substitute.

Q: Does the higher continuous drain current (260A versus 240A) of the IXTH260N055T2 create any compatibility issues?

A: No. Higher current rating indicates improved performance capability. The substitute part can handle the same or greater current demands as the original part. This represents a performance enhancement rather than a compatibility concern.

Q: What is the significance of the lower gate charge (140nC versus 170nC) in the substitute part?

A: Lower gate charge reduces switching losses and improves switching speed. This results in lower power dissipation and improved thermal performance, representing a beneficial characteristic change in the substitute part.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts share identical REACH and ECCN classifications. The IXTH260N055T2 includes RoHS3 compliance certification, providing additional environmental compliance assurance. No regulatory barriers exist to substitution.

Q: How does the package change from TO-3P to TO-247 affect thermal performance?

A: Both packages are rated for identical maximum power dissipation (480W). Thermal performance depends on PCB layout, heatsinking, and mounting configuration. The TO-247 package may offer different thermal characteristics based on specific application implementation, but maximum thermal capability remains equivalent.

Q: What inventory considerations apply to this substitution?

A: The IXTQ240N055T is obsolete with limited remaining stock (1126 pcs). The IXTH260N055T2 is an active product with significantly higher availability (5411 pcs). Substitution ensures long-term procurement viability and eliminates obsolescence risk.