STB28N65M2 Equivalent & Substitute Parts

Part Overview

The STB28N65M2 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 650V drain-to-source voltage with a continuous drain current of 20A at 25°C. This device operates in the MDmesh™ M2 series and is housed in a Surface Mount TO-263 (D2PAK) package. The part is Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining the same package form factor and mounting technology. Alternative models may be required due to inventory availability, supply chain considerations, or specific application requirements that benefit from enhanced performance characteristics within compatible parameter windows.

Substiute Parts

STB28N65M2

STMicroelectronicsIn Stock: 16431STB28N65M2 Datasheet

Current PartRFQ

IXFA22N65X2

IXYSIn Stock: 1317IXFA22N65X2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STB28N65M2 is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 650V Vdss rating to ensure equivalent voltage stress capability and circuit protection margins.

Current Rating Compatibility: The substitute part must support a continuous drain current equal to or greater than 20A at 25°C to handle the same load conditions without thermal derating.

On-State Resistance (Rds On): The substitute part must maintain Rds On values at or below the specified maximum to ensure equivalent or improved conduction losses and thermal performance.

Package and Mounting: The substitute part must use Surface Mount TO-263 (D2PAK) packaging to ensure mechanical and thermal compatibility with existing PCB layouts and thermal management solutions.

Compliance Standards: The substitute part must maintain RoHS3 compliance and equivalent moisture sensitivity ratings to meet regulatory and manufacturing requirements.

The IXFA22N65X2 qualifies as a substitute based on matching voltage rating (650V), exceeding current rating (22A vs. 20A), improved on-state resistance (160mOhm vs. 180mOhm), compatible package format (TO-263HV), and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The STB28N65M2 remains the primary selection for applications requiring the MDmesh™ M2 series characteristics with 20A continuous drain current and 170W power dissipation in a compact TO-263 package. This part is Active in product status with 16,400 units in stock, ensuring supply continuity.

Substitute Part Selection: The IXFA22N65X2 is a qualified substitute when the following conditions are met:

The application requires higher current capacity (22A vs. 20A) or improved thermal performance (390W vs. 170W power dissipation). The IXFA22N65X2 maintains the 650V voltage rating and improves on-state resistance to 160mOhm, reducing conduction losses. Both parts maintain identical RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity ratings.

The IXFA22N65X2 operates across an extended temperature range (-55°C to 150°C) compared to the STB28N65M2 (150°C maximum), providing additional thermal margin in cold-start or low-temperature environments.

Compliance Verification: Both parts satisfy regulatory requirements for RoHS3 compliance and REACH unaffected status. No additional certification or testing is required for direct substitution in applications where the electrical parameters align with circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the IXFA22N65X2 be used as a direct replacement for the STB28N65M2 in existing PCB designs?

A: Yes. Both parts use the TO-263 (D2PAK) Surface Mount package with identical pinout and thermal tab configuration. PCB layouts, thermal management solutions, and mounting hardware require no modification. The IXFA22N65X2 provides equivalent or improved electrical performance within the same physical footprint.

Q: What are the key electrical differences between these two parts?

A: The IXFA22N65X2 provides higher continuous drain current (22A vs. 20A), lower on-state resistance (160mOhm vs. 180mOhm), and significantly higher power dissipation capability (390W vs. 170W). Both maintain the same 650V voltage rating and 10V drive voltage. Gate charge is slightly higher (38nC vs. 35nC), which may increase switching losses marginally in high-frequency applications.

Q: Are there any thermal management considerations when substituting these parts?

A: The IXFA22N65X2 has superior thermal performance due to higher power dissipation rating (390W vs. 170W). Existing thermal management solutions designed for the STB28N65M2 will operate with improved thermal margins when using the IXFA22N65X2. No additional cooling is required for equivalent current levels.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the STB28N65M2 and IXFA22N65X2 are RoHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity ratings (MSL 1). No additional compliance verification is required for substitution.

Q: What is the operating temperature range difference, and does it affect substitution?

A: The STB28N65M2 operates to a maximum junction temperature of 150°C. The IXFA22N65X2 operates from -55°C to 150°C, providing extended low-temperature capability. For applications operating within the 0°C to 150°C range, both parts are equivalent. For cold-start or low-temperature environments below 0°C, the IXFA22N65X2 provides additional operational margin.

Q: How do gate charge specifications affect circuit design when substituting these parts?

A: The IXFA22N65X2 has slightly higher gate charge (38nC vs. 35nC at 10V). This results in marginally longer switching times and increased gate drive power requirements. For most applications, this difference is negligible. High-frequency switching circuits (above 100 kHz) should verify gate drive capability to ensure adequate current sourcing for the IXFA22N65X2.

Q: Are there packaging or supplier differences that affect procurement?

A: The STB28N65M2 is supplied in Cut Tape (CT) and Digi-Reel® packaging with 16,400 units in stock. The IXFA22N65X2 is supplied in Tube packaging with 1,280 units in stock. Both are Surface Mount TO-263 packages suitable for automated assembly. Procurement lead times and minimum order quantities may differ between suppliers.