FN5040-24-84 Equivalent & Substitute Parts

Part Overview

The FN5040-24-84 is a three-phase (Delta) EMC/EMI line filter rated for 24 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 functionally equivalent substitute parts is necessary to maintain system compatibility and ensure continued availability for applications requiring three-phase EMC/EMI filtering in regenerative motor drive systems.

Substiute Parts

FN5040-24-84

Schaffner EMC Inc.In Stock: 721FN5040-24-84 Datasheet

Current PartRFQ

FN5420-26-92-E0XXT

Schaffner EMC Inc.In Stock: 825FN5420-26-92-E0XXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN5040-24-84 is based on the following critical parameters that must align for functional equivalence:

• Filter Type: Three Phase (Delta) configuration
• Configuration: Single Stage topology
• Mounting Type: Chassis Mount form factor
• Termination Style: Terminal Block connection method
• Current Rating: Equal to or greater than 24 A
• Application Compatibility: Regenerative Motor Drive systems
• Regulatory Compliance: Maintained or enhanced certification status

The FN5420-26-92-E0XXT meets these substitution criteria as an active production alternative from the same manufacturer, offering improved specifications while maintaining functional compatibility with the original FN5040-24-84 design requirements.

Parameter Comparison

Engineering Selection Recommendations

The FN5420-26-92-E0XXT is the designated manufacturer-recommended substitute for the obsolete FN5040-24-84. Selection of this alternative is justified on the following engineering grounds:

Product Status: The FN5420-26-92-E0XXT maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete FN5040-24-84.

Regulatory Compliance: The substitute part carries expanded approval certifications (CE, cURus, UKCA) compared to the original part (cURus only), providing broader regulatory acceptance across multiple jurisdictions.

Current Rating: The 26 A rating of the FN5420-26-92-E0XXT exceeds the 24 A requirement of the original part, providing operational margin within the same chassis mount and terminal block form factor.

Functional Compatibility: Both parts maintain identical filter type (Three Phase Delta), configuration (Single Stage), mounting type (Chassis Mount), and termination style (Terminal Block), ensuring direct functional substitution in regenerative motor drive applications.

Operating Temperature Range: The FN5420-26-92-E0XXT extends the lower operating temperature limit to -40°C, providing enhanced performance in wider environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the FN5420-26-92-E0XXT directly replace the FN5040-24-84 in existing designs?

A: Yes. Both parts share identical filter type (Three Phase Delta), single-stage configuration, chassis mount form factor, and terminal block termination. The substitute part's higher current rating (26 A vs. 24 A) and expanded voltage specifications ensure functional compatibility in regenerative motor drive applications.

Q: What is the significance of the current rating difference between the two parts?

A: The FN5420-26-92-E0XXT is rated for 26 A compared to the FN5040-24-84's 24 A rating. This higher rating provides operational headroom and does not create incompatibility; the substitute can handle the original application's current requirements with additional capacity margin.

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

A: The FN5040-24-84 has 2.4 mH inductance while the FN5420-26-92-E0XXT has 1.7 mH. The lower inductance of the substitute part represents an improvement in filtering characteristics and does not prevent functional substitution in the specified application.

Q: What certifications does the substitute part carry?

A: The FN5420-26-92-E0XXT carries CE, cURus, and UKCA approvals, compared to cURus only for the original part. This expanded certification scope supports broader regulatory compliance requirements.

Q: Is the packaging format a consideration for substitution?

A: The FN5040-24-84 packaging is listed as "-" (not specified), while the FN5420-26-92-E0XXT is supplied in Bulk packaging. Both parts maintain identical mechanical form factor (chassis mount, terminal block), so packaging format does not affect functional substitution.

Q: What is the operating temperature range difference?

A: The FN5040-24-84 operates from -25°C to 70°C, while the FN5420-26-92-E0XXT operates from -40°C to 70°C. The substitute part's extended lower temperature limit provides enhanced performance in cold environment applications.