FSB50250UTD Equivalent & Substitute Parts

Part Overview

The FSB50250UTD is a Power Driver Module MOSFET manufactured by onsemi, designed for 3-phase motor control applications. This module operates at 500V with a rated current of 1.1A and is housed in a 23-PowerDIP Module package. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

FSB50250UTD

onsemiIn Stock: 2053FSB50250UTD Datasheet

Current PartRFQ

FSB50250AT

Fairchild SemiconductorIn Stock: 2300FSB50250AT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the FSB50250UTD are identified based on the following critical electrical and mechanical parameters:

• Voltage Rating: 500V minimum
• Configuration: 3-phase motor control topology
• Isolation Voltage: 1500Vrms
• Package Type: 23-PowerDIP Module through-hole mounting
• Current Capability: Minimum 1.1A (higher ratings acceptable)
• Device Type: MOSFET power driver module

The FSB50250AT meets these substitution criteria with compatible electrical specifications and package configuration, enabling direct functional replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The FSB50250AT is a direct functional substitute for the FSB50250UTD. Both components share identical voltage ratings (500V), isolation specifications (1500Vrms), 3-phase configuration, and through-hole mounting methodology. The FSB50250AT provides a current rating of 1.2A, which exceeds the 1.1A requirement of the original part, ensuring adequate performance margin.

The primary distinction is product status: the FSB50250UTD is obsolete, while the FSB50250AT maintains active production status. Both components carry identical export classification (EAR99) and tariff codes (8542.39.0001), confirming regulatory equivalence.

Package dimensions differ slightly (0.748" vs. 0.551" length), requiring verification of PCB layout compatibility during implementation. The through-hole mounting type remains consistent between both parts.

Frequently Asked Questions (FAQ)

Q: Can FSB50250AT directly replace FSB50250UTD in existing designs?

A: Yes. Both components meet the critical substitution parameters: 500V voltage rating, 1500Vrms isolation, 3-phase configuration, and through-hole 23-PowerDIP mounting. The FSB50250AT's 1.2A current rating exceeds the original 1.1A specification.

Q: What is the significance of the package dimension difference?

A: The FSB50250AT package measures 0.551" (14.00mm) compared to the FSB50250UTD's 0.748" (19.00mm). Both use identical 23-PowerDIP Module form factor with through-hole mounting. PCB layout verification is required to confirm the smaller package accommodates existing footprints.

Q: Why is the FSB50250UTD classified as obsolete?

A: Product obsolescence indicates the component is no longer manufactured by onsemi. The FSB50250AT, maintained in active production by Fairchild Semiconductor, provides continuity for applications requiring this functional class.

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

A: Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence for export and tariff purposes.

Q: What parameters must remain constant for substitution validity?

A: Voltage rating (500V), isolation voltage (1500Vrms), 3-phase configuration, and through-hole mounting type are non-negotiable substitution criteria. Current rating may be equal or higher; package dimensions require PCB compatibility verification.