IXTH50N25T N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IXTH50N25T is an N-Channel MOSFET manufactured by IXYS, rated for 250V drain-to-source voltage with 50A continuous drain current at 25°C. This device is packaged in a TO-247 through-hole configuration and is part of the Trench series. The IXTH50N25T is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity. Equivalent parts must maintain electrical compatibility across voltage, current, and thermal specifications while preserving the through-hole TO-247 package format.

Substiute Parts

IXTH50N25T

IXYSIn Stock: 32629IXTH50N25T Datasheet

Current PartRFQ

IXTH76N25T

IXYSIn Stock: 5835IXTH76N25T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXTH50N25T is determined by strict electrical and mechanical parameter compatibility. The primary substitute identified is the IXTH76N25T, which maintains the following critical alignment criteria:

Electrical Compatibility Parameters:

• Drain-to-Source Voltage (Vdss): Both rated at 250V
• Gate Threshold Voltage (Vgs(th)): Both rated at 5V @ 1mA
• Maximum Gate Voltage (Vgs Max): Both rated at ±30V
• Operating Temperature Range: Both rated at -55°C to 150°C
• Drive Voltage (Max Rds On): Both rated at 10V

Mechanical Compatibility Parameters:

• Package Type: Both use TO-247-3 through-hole configuration
• Mounting Type: Both are through-hole mounted
• Series Classification: Both belong to the Trench series

Performance Enhancement Parameters: The IXTH76N25T provides increased current handling capability (76A vs. 50A) and improved power dissipation (460W vs. 400W), making it a direct functional upgrade while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The IXTH76N25T is the primary substitute for the obsolete IXTH50N25T. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The IXTH50N25T is classified as obsolete, while the IXTH76N25T maintains active product status with current manufacturing support and availability.

Regulatory Compliance: Both devices maintain identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 ECCN classification. No regulatory barriers exist to substitution.

Electrical Specification Compatibility: The IXTH76N25T maintains all critical voltage and temperature specifications identical to the IXTH50N25T. The 250V Vdss rating, 5V gate threshold voltage, and ±30V maximum gate voltage are preserved, ensuring direct functional compatibility in existing circuit designs.

Mechanical Package Compatibility: Both devices use the TO-247-3 through-hole package, permitting direct board-level substitution without PCB redesign or mechanical rework.

Performance Enhancement: The IXTH76N25T provides increased current capacity (76A vs. 50A) and higher power dissipation rating (460W vs. 400W), delivering improved thermal and electrical headroom in applications originally designed for the IXTH50N25T.

Frequently Asked Questions (FAQ)

Q: Can the IXTH76N25T be used as a direct replacement for the IXTH50N25T in existing designs?

A: Yes. The IXTH76N25T maintains identical voltage ratings (250V Vdss), gate threshold specifications (5V @ 1mA), and operating temperature range (-55°C to 150°C). The TO-247-3 package is mechanically identical, permitting direct board-level substitution without circuit modification.

Q: What are the key differences between these two devices?

A: The primary differences are continuous drain current rating (50A vs. 76A), power dissipation capability (400W vs. 460W), on-state resistance (60mOhm vs. 39mOhm), and gate charge (78nC vs. 92nC). The IXTH76N25T represents a performance upgrade with higher current and thermal capacity.

Q: Why is the IXTH50N25T classified as obsolete?

A: The IXTH50N25T is listed as obsolete by the manufacturer. The IXTH76N25T is the active equivalent offering superior electrical performance within the same package and voltage class.

Q: Are there any compliance or certification differences between these parts?

A: No. Both devices carry identical certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 ECCN classification. No regulatory barriers exist to substitution.

Q: Does the increased gate charge of the IXTH76N25T (92nC vs. 78nC) affect circuit design?

A: Gate charge is provided in the parameter comparison for reference. Circuit designs must be evaluated based on specific gate driver capabilities and switching frequency requirements. The 14nC increase represents approximately 18% higher gate charge.

Q: What is the packaging difference between the IXTH50N25T and IXTH76N25T?

A: The IXTH50N25T is supplied in standard packaging, while the IXTH76N25T is supplied in Tube packaging. Both use the TO-247-3 through-hole package format. Packaging format does not affect electrical or mechanical compatibility.

Q: Can circuits designed for 50A operation use the IXTH76N25T without modification?

A: Yes. The IXTH76N25T is rated for 76A continuous drain current, providing 52% additional current capacity. Circuits designed for 50A operation operate within the electrical specifications of the IXTH76N25T without modification.