IXTP340N04T4 Equivalent & Substitute Parts

Part Overview

The IXTP340N04T4 is an N-Channel MOSFET manufactured by IXYS, rated for 40V drain-to-source voltage with a continuous drain current of 340A at 25°C. This device is housed in a TO-220-3 through-hole package and is designed for high-current switching applications requiring low on-resistance performance. The part is classified as Last Time Buy, indicating that the original manufacturer has discontinued or will discontinue production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

IXTP340N04T4

IXYSIn Stock: 766IXTP340N04T4 Datasheet

Current PartRFQ

IRFB7437PBF

Infineon TechnologiesIn Stock: 55397IRFB7437PBF Datasheet

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IRFB7440PBF

Infineon TechnologiesIn Stock: 53502IRFB7440PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IXTP340N04T4 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Drain-to-Source Voltage (Vdss): Must equal 40V to maintain voltage rating compatibility
• Package Type: Must be TO-220-3 through-hole configuration for mechanical and thermal interface compatibility
• FET Type: Must be N-Channel MOSFET with metal-oxide technology
• Operating Temperature Range: Must support -55°C to 175°C to match thermal specifications
• Continuous Drain Current (Id): Substitute parts must meet or exceed the application's current requirements
• On-Resistance (Rds On): Lower or equal values ensure thermal performance is maintained or improved
• Compliance Status: Parts must maintain RoHS3 compliance and REACH unaffected status

The substitute parts listed below satisfy these core electrical and mechanical parameters while offering alternative sourcing options from active manufacturers.

Parameter Comparison

Engineering Selection Recommendations

IRFB7437PBF is suitable as a substitute when the application current requirement does not exceed 195A. This part maintains the 40V voltage rating, operates across the same temperature range, and is manufactured by Infineon Technologies with active product status. The IRFB7437PBF offers improved on-resistance characteristics (2.0 mOhm) and lower gate charge (225 nC), resulting in reduced switching losses. Both RoHS3 compliance and REACH unaffected status are maintained. This substitute is appropriate for applications where the IXTP340N04T4's maximum current rating of 340A is not fully utilized.

IRFB7440PBF is suitable as a substitute when the application current requirement does not exceed 120A. This part maintains the 40V voltage rating and full operating temperature range compatibility. The IRFB7440PBF is manufactured by Infineon Technologies with active product status and offers the lowest gate charge (135 nC) and input capacitance (4730 pF) among the listed substitutes, making it advantageous for high-frequency switching applications. RoHS3 compliance and REACH unaffected status are maintained. This substitute is appropriate for lower-current applications where thermal and switching performance can be optimized.

Both substitute parts are sourced from an active manufacturer with established supply availability, ensuring long-term design support and component accessibility.

Frequently Asked Questions (FAQ)

Q: Can IRFB7437PBF or IRFB7440PBF be used as direct replacements for IXTP340N04T4 in all applications?

A: Direct replacement depends on the application's current requirements. Both substitutes maintain the 40V voltage rating and TO-220 package compatibility. However, IRFB7437PBF is rated for 195A maximum continuous drain current, and IRFB7440PBF is rated for 120A. If the application requires the full 340A capability of the IXTP340N04T4, these substitutes are not suitable. For applications operating below these current thresholds, substitution is permissible.

Q: What are the thermal implications of using a lower-rated substitute?

A: The IXTP340N04T4 has a maximum power dissipation of 480W, while IRFB7437PBF is rated for 230W and IRFB7440PBF for 143W. If the application dissipates power within the substitute's rating, thermal performance is maintained. If power dissipation exceeds the substitute's rating, thermal management becomes inadequate, and the substitute is unsuitable. Verify application power dissipation against each substitute's maximum rating.

Q: Are there package compatibility concerns between TO-220-3 and TO-220AB?

A: Both TO-220-3 and TO-220AB are through-hole packages with identical pin configurations and mechanical footprints. They are mechanically and electrically interchangeable on standard PCB layouts. No package-related design modifications are required.

Q: How do gate charge differences affect circuit performance?

A: The IXTP340N04T4 has a gate charge of 256 nC, while IRFB7437PBF has 225 nC and IRFB7440PBF has 135 nC. Lower gate charge reduces switching losses and allows faster switching transitions. In high-frequency applications, the lower gate charge of the Infineon substitutes may improve efficiency. In low-frequency applications, this difference has minimal impact.

Q: What is the significance of the ±20V gate voltage rating on the substitutes versus ±15V on the IXTP340N04T4?

A: The substitutes' higher ±20V gate voltage rating provides greater design margin and tolerance for gate drive circuits. This does not affect compatibility; the IXTP340N04T4's ±15V specification is fully contained within the substitutes' ±20V range. Gate drive circuits designed for the original part operate safely with the substitutes.

Q: Are compliance certifications maintained across all listed parts?

A: Yes. The IXTP340N04T4, IRFB7437PBF, and IRFB7440PBF are all RoHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all listed parts, and no additional certification review is required for substitution.