FSB50325T Equivalent & Substitute Parts

Part Overview

The FSB50325T is a Power Driver Module MOSFET manufactured by onsemi, designed for 3-phase motor control applications. This module integrates gate driver and power switching functionality in a 23-PowerDIP package, rated for 250V operation at 1.5A continuous current with 1500Vrms isolation. The FSB50325T carries an Obsolete product status, necessitating identification of functionally compatible alternatives for ongoing system support and new designs.

Substiute Parts

FSB50325T

onsemiIn Stock: 7502FSB50325T Datasheet

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FSB50325AT

onsemiIn Stock: 2133FSB50325AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FSB50325T is determined by the following critical parameters:

• Voltage Rating: Must equal or exceed 250V
• Configuration: Must maintain 3-phase topology
• Package Type: Must be 23-PowerDIP Module (0.748", 19.00mm) for PCB compatibility
• Mounting Type: Must be Through Hole
• Voltage Isolation: Must meet or exceed 1500Vrms
• Current Rating: Must support minimum 1.5A operation

The FSB50325AT qualifies as a direct substitute based on matching all critical parameters while providing enhanced current capability (1.7A vs. 1.5A), maintaining identical voltage, isolation, package, and mounting specifications.

Parameter Comparison

Engineering Selection Recommendations

The FSB50325AT serves as the primary substitute for FSB50325T applications. Both modules are classified as Obsolete products within the Motion SPM® 5 series. The FSB50325AT provides identical electrical and mechanical specifications with the following considerations:

• Current Capability: The FSB50325AT offers 1.7A versus the original 1.5A, providing 13% additional headroom for thermal margin and system reliability
• Compliance: FSB50325AT carries explicit ROHS3 compliance certification, whereas the original part does not specify RoHS status
• Regulatory: Both parts maintain REACH Unaffected status and identical ECCN/HTSUS classifications
• Inventory: FSB50325AT availability is documented at 2060 units

For applications requiring the original FSB50325T specifications, the FSB50325AT represents a functionally equivalent replacement with enhanced current rating and improved compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can FSB50325AT directly replace FSB50325T in existing designs?

A: Yes. The FSB50325AT maintains identical voltage (250V), isolation (1500Vrms), package (23-PowerDIP), and mounting specifications (Through Hole). The increased current rating (1.7A vs. 1.5A) is compatible with applications designed for 1.5A operation.

Q: What is the significance of the current rating difference?

A: The FSB50325AT's 1.7A rating exceeds the original 1.5A specification. This higher rating does not create incompatibility; it provides additional thermal margin and operational headroom for the same application requirements.

Q: Are there package compatibility concerns?

A: No. Both parts use the identical 23-PowerDIP Module package (0.748", 19.00mm) with Through Hole mounting. PCB footprints and assembly processes remain unchanged.

Q: What does the Obsolete status mean for component selection?

A: Both the FSB50325T and FSB50325AT are classified as Obsolete products. This status indicates onsemi has discontinued active production and support. Existing inventory may be available through authorized distributors, but long-term availability is not guaranteed.

Q: Are there regulatory or compliance differences?

A: The FSB50325AT explicitly declares ROHS3 compliance, while the FSB50325T does not specify RoHS status. Both maintain REACH Unaffected classification and identical export control designations (EAR99).