FN5045-260-99 Equivalent & Substitute Parts

Part Overview

The FN5045-260-99 is a three-phase (Delta) EMC/EMI line filter rated for 260 A AC, designed for chassis mount applications with terminal block termination. This component is classified as obsolete and is no longer in active production. Due to its obsolete status, identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement or new designs requiring comparable filtering performance.

Substiute Parts

FN5045-260-99

Schaffner EMC Inc.In Stock: 784FN5045-260-99 Datasheet

Current PartRFQ

FN5420-300-99-E0XXT

Schaffner EMC Inc.In Stock: 1113FN5420-300-99-E0XXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN5045-260-99 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration must be maintained
• Configuration: Single Stage filtering architecture
• Current Rating: Substitute must meet or exceed 260 A capacity
• Mounting Type: Chassis Mount form factor
• Termination Style: Terminal Block connection method
• Application Compatibility: Regenerative Motor Drive applications

The FN5420-300-99-E0XXT qualifies as a manufacturer-recommended substitute based on matching filter type, configuration, mounting type, and termination style. The substitute provides higher current capacity (302 A) and improved operating temperature range (-40°C ~ 70°C), making it suitable for applications requiring the FN5045-260-99.

Parameter Comparison

Engineering Selection Recommendations

The FN5420-300-99-E0XXT is the manufacturer-recommended substitute for the obsolete FN5045-260-99. Selection of this substitute is supported by:

• Product Status: The substitute is in active production, ensuring long-term availability and supply chain continuity
• Compliance Certifications: The FN5420-300-99-E0XXT holds CE, cURus, and UKCA approvals, providing broader regulatory coverage compared to the original part's cURus certification alone
• Current Capacity: The 302 A rating exceeds the original 260 A specification, accommodating applications at or below the original current requirement
• Form Factor Compatibility: Identical mounting type (Chassis Mount) and termination style (Terminal Block) ensure mechanical and electrical interface compatibility
• Operating Range: Extended lower temperature limit (-40°C versus -25°C) provides improved performance in wider environmental conditions

Frequently Asked Questions (FAQ)

Q: Can the FN5420-300-99-E0XXT directly replace the FN5045-260-99 in existing designs?

A: Yes. Both components share identical filter type (Three Phase Delta), configuration (Single Stage), mounting type (Chassis Mount), and termination style (Terminal Block). The substitute's higher current rating (302 A) and active product status make it suitable for direct replacement.

Q: What is the significance of the current rating difference between 260 A and 302 A?

A: The substitute's higher current rating indicates improved capacity. For applications operating at or below 260 A, the FN5420-300-99-E0XXT provides equivalent or superior performance without derating.

Q: How do the inductance values differ, and does this affect substitution?

A: The FN5045-260-99 has 200 µH inductance while the FN5420-300-99-E0XXT has 146 µH. Both are single-stage three-phase filters suitable for regenerative motor drive applications. The lower inductance in the substitute may provide different filtering characteristics; system-level validation is appropriate for critical applications.

Q: What certifications does the substitute carry?

A: The FN5420-300-99-E0XXT holds CE, cURus, and UKCA approvals, compared to the original part's cURus certification. This expanded certification scope supports broader market compliance requirements.

Q: Is the FN5045-260-99 still available for purchase?

A: The FN5045-260-99 is classified as obsolete. The FN5420-300-99-E0XXT is the active substitute with confirmed inventory availability.

Q: What is the packaging difference between these parts?

A: The FN5045-260-99 packaging is listed as standard, while the FN5420-300-99-E0XXT is supplied in Bulk packaging. Confirm packaging requirements with your procurement process.