FN420-4-13 Equivalent & Substitute Parts

Part Overview

The FN420-4-13 is a single-phase EMC/EMI line filter manufactured by Schaffner EMC Inc., rated for 250VAC at 4A with DC to 400Hz operating frequency. This chassis-mount filter features quick-connect termination and is designed for general-purpose applications requiring electromagnetic compatibility filtering.

The FN420-4-13 carries a "Not For New Designs" product status, indicating it has been superseded or discontinued for new applications. Organizations currently using this component or requiring functional equivalents for legacy systems, maintenance, or replacement scenarios must identify suitable alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

FN420-4-13

Schaffner EMC Inc.In Stock: 892FN420-4-13 Datasheet

Current PartRFQ

5500.2028

SCHURTER Inc.In Stock: 14625500.2028 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN420-4-13 is determined by the following critical parameters:

• Voltage Rating: The substitute must support 250VAC operation. Support for additional voltage ratings (such as 125VAC) does not disqualify a part, as it indicates broader compatibility.
• Current Rating: The substitute must be rated for 4A minimum.
• Filter Type & Configuration: Single-phase, single-stage topology is required.
• Mounting & Termination: Chassis mount with quick-connect termination ensures mechanical and electrical interface compatibility.
• Compliance: RoHS3 compliance and REACH unaffected status align with modern regulatory requirements.

The SCHURTER 5500.2028 meets all substitution criteria. It supports both 125V and 250VAC operation, maintains 4A current rating, preserves single-phase single-stage configuration, and uses identical chassis-mount quick-connect termination. The extended operating temperature range (-25°C ~ 100°C) and active product status provide additional advantages for new applications.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 5500.2028 is the qualified substitute for the FN420-4-13 based on electrical and mechanical parameter alignment. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory standards.

The 5500.2028 carries active product status, ensuring continued availability and support for both replacement and new design applications. The dual voltage rating (125V/250VAC) provides operational flexibility without compromising 250VAC compatibility. The reduced inductance (1.5mH versus 2mH) represents a minor design variation that does not affect substitution validity for general-purpose filtering applications.

Approval certifications differ between manufacturers: the FN420-4-13 holds CSA, ENEC, and UR approvals, while the 5500.2028 holds cURus, ENEC, and VDE approvals. Both include ENEC certification, a common European standard. System designers must verify that the specific approval certifications required by their application or regional standards are met by the selected substitute.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 5500.2028 directly replace the FN420-4-13 in existing installations?

A: Yes, for applications operating at 250VAC and 4A with single-phase, single-stage filtering requirements. Both components use identical chassis-mount quick-connect termination, ensuring mechanical and electrical interface compatibility. Verify that the approval certifications required by your system meet the 5500.2028 specifications.

Q: What is the significance of the frequency range difference (DC ~ 400Hz versus 50/60Hz)?

A: The FN420-4-13 operates across a broader frequency spectrum (DC to 400Hz), while the 5500.2028 is specified for standard industrial frequencies (50/60Hz). For applications requiring DC or extended frequency operation beyond 60Hz, the FN420-4-13 specifications must be confirmed as mandatory. For standard AC power distribution systems, the 5500.2028 is fully compatible.

Q: Does the inductance difference (2mH versus 1.5mH) affect substitution?

A: Inductance variation of this magnitude does not disqualify substitution for general-purpose EMC/EMI filtering. Both values fall within acceptable ranges for single-stage line filters at this current rating. System-level EMI performance testing may be warranted if the application has stringent filtering requirements.

Q: Why does the FN420-4-13 have "Not For New Designs" status?

A: This designation indicates the component has been superseded. The SCHURTER 5500.2028, with active product status, is the recommended choice for new applications requiring equivalent filtering performance.

Q: Are the approval certifications interchangeable between the two parts?

A: No. The FN420-4-13 holds CSA, ENEC, and UR certifications, while the 5500.2028 holds cURus, ENEC, and VDE certifications. Both include ENEC approval. Verify that your application's regional or system-level certification requirements are satisfied by the substitute part's approval portfolio before implementation.