FN5040-4.5-82 Equivalent & Substitute Parts

Part Overview

The FN5040-4.5-82 is a three-phase (delta) EMC/EMI line filter rated for 4.5 A AC, designed for chassis mount applications with terminal block termination. This component is classified as obsolete, indicating that direct replacements from current product lines should be evaluated for new designs and ongoing procurement needs. The filter is suitable for regenerative motor drive applications and carries cURus approval certification.

Due to its obsolete status, identifying functionally equivalent substitute parts from active product lines is essential for system continuity and future component availability.

Substiute Parts

FN5040-4.5-82

Schaffner EMC Inc.In Stock: 1040FN5040-4.5-82 Datasheet

Current PartRFQ

FN5420-5.9-88-E0XXT

Schaffner EMC Inc.In Stock: 887FN5420-5.9-88-E0XXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN5040-4.5-82 is based on the following critical parameters that must be maintained or exceeded:

Core Compatibility Criteria:

• Filter Type: Three Phase (Delta) configuration
• Configuration: Single Stage topology
• Mounting Type: Chassis Mount form factor
• Termination Style: Terminal Block interface
• Application Suitability: Regenerative Motor Drive compatibility
• Current Rating: Equal to or greater than 4.5 A
• Approval Certifications: Compliance with required regulatory standards

The FN5420-5.9-88-E0XXT qualifies as a manufacturer-recommended substitute because it maintains identical filter topology, mounting configuration, and termination style while providing increased current capacity (5.9 A versus 4.5 A) and expanded operating frequency range (DC ~ 60Hz). The substitute part carries active product status with enhanced certifications (CE, cURus, UKCA) and improved temperature operating range (-40°C to 70°C).

Parameter Comparison

Engineering Selection Recommendations

The FN5420-5.9-88-E0XXT is the manufacturer-recommended substitute for the obsolete FN5040-4.5-82. Selection of this substitute is supported by the following engineering factors:

Product Status Transition: The FN5040-4.5-82 is classified as obsolete, while the FN5420-5.9-88-E0XXT maintains active product status, ensuring long-term availability and continued manufacturer support.

Regulatory Compliance: The substitute part carries expanded certification coverage (CE, cURus, UKCA) compared to the original part (cURus only), providing broader market compliance for applications requiring multiple regulatory approvals.

Performance Characteristics: The substitute provides higher current capacity (5.9 A versus 4.5 A), accommodating applications with increased power requirements while maintaining the same physical form factor and mounting interface. The extended operating temperature range (-40°C to 70°C versus -25°C to 70°C) provides improved thermal margin for demanding environments.

Functional Equivalence: Both parts maintain identical three-phase delta filter topology, single-stage configuration, chassis mount form factor, and terminal block termination, ensuring mechanical and electrical interface compatibility within the system design.

Frequently Asked Questions (FAQ)

Q: Can the FN5420-5.9-88-E0XXT directly replace the FN5040-4.5-82 in existing designs?

A: Yes. Both parts share identical filter topology (three-phase delta), configuration (single stage), mounting type (chassis mount), and termination style (terminal block). The substitute provides equal or superior performance across all specified parameters. Physical form factor compatibility should be verified against the specific chassis mounting requirements of your application.

Q: What is the difference in inductance between these two parts?

A: The FN5040-4.5-82 has 13 mH inductance, while the FN5420-5.9-88-E0XXT has 7.48 mH inductance. This difference reflects the design optimization in the newer part for higher current capacity. Inductance values should be evaluated against your system's EMI filtering requirements and circuit impedance specifications.

Q: Why does the substitute part have a lower inductance value despite higher current rating?

A: The FN5420-5.9-88-E0XXT represents a newer design generation optimized for higher current handling with improved filtering characteristics. Lower inductance at higher current capacity is a result of advanced core and winding design. System performance should be validated through electrical testing if inductance is a critical parameter for your application.

Q: Are there packaging differences between these parts?

A: The FN5040-4.5-82 packaging is listed as "-" (not specified), while the FN5420-5.9-88-E0XXT is supplied in Bulk packaging. Confirm packaging requirements with your procurement process.

Q: What certifications does the substitute part carry?

A: The FN5420-5.9-88-E0XXT carries CE, cURus, and UKCA certifications, providing broader regulatory coverage than the original part's cURus certification alone. This expanded certification scope supports compliance requirements across multiple markets and regulatory jurisdictions.

Q: Is the substitute part suitable for regenerative motor drive applications?

A: Yes. The FN5420-5.9-88-E0XXT is specified for regenerative motor drive applications, matching the original part's intended use case.