FN682-4-06 Equivalent & Substitute Parts

Part Overview

The FN682-4-06 is a single-phase EMC/EMI line filter manufactured by Schaffner EMC Inc., rated for 250VAC at 4A with two-stage configuration and quick connect termination. This chassis-mounted filter is designed for general-purpose applications operating across DC to 400Hz frequency range. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs requiring compatible filtering solutions.

Substiute Parts

FN682-4-06

Schaffner EMC Inc.In Stock: 787FN682-4-06 Datasheet

Current PartRFQ

FN2080-6-06

Schaffner EMC Inc.In Stock: 5297FN2080-6-06 Datasheet

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FN2090-4-06

Schaffner EMC Inc.In Stock: 1788FN2090-4-06 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FN682-4-06 are qualified based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

• Single-phase filter configuration
• Two-stage design
• DC to 400Hz operating frequency range
• Chassis mount with quick connect termination
• 250VAC voltage rating (minimum requirement)
• Current rating equal to or greater than 4A
• General-purpose application suitability

The FN2090-4-06 provides direct substitution with identical current rating (4A) and voltage compatibility (110V/250VAC). The FN2080-6-06 offers higher current capacity (6A) suitable for applications requiring additional margin or higher load conditions while maintaining all other core specifications.

Parameter Comparison

Engineering Selection Recommendations

FN2090-4-06 is the primary substitute for direct replacement applications. It maintains identical current rating (4A) and dual voltage capability (110V/250VAC), ensuring compatibility with existing 250VAC designs. The part carries active product status with expanded regulatory approvals (CE, CSA, ENEC, UR) compared to the obsolete FN682-4-06. ROHS3 compliance provides enhanced environmental standards alignment.

FN2080-6-06 is suitable for applications where increased current capacity (6A) is acceptable or beneficial. This part provides design margin for systems operating near the 4A threshold or where future load expansion is anticipated. Operating temperature range (-25°C to 100°C) exceeds that of FN2090-4-06 (-20°C to 100°C), offering broader thermal operating envelope.

Both substitute parts maintain the same mounting configuration, termination style, and operating frequency range as the original FN682-4-06, ensuring mechanical and electrical compatibility within chassis-mounted EMC/EMI filtering applications.

Frequently Asked Questions (FAQ)

Q: Can FN2090-4-06 directly replace FN682-4-06 in existing designs?

A: Yes. The FN2090-4-06 provides direct substitution with matching 4A current rating, 250VAC voltage capability, two-stage configuration, quick connect termination, and chassis mount design. Both operate across DC to 400Hz frequency range for general-purpose applications.

Q: What is the difference between FN2090-4-06 and FN2080-6-06?

A: The primary difference is current rating: FN2090-4-06 is rated 4A while FN2080-6-06 is rated 6A. The FN2080-6-06 also has lower inductance (7.8mH vs 14mH) and wider operating temperature range (-25°C to 100°C vs -20°C to 100°C). Both maintain identical voltage ratings, frequency range, and mounting specifications.

Q: Are there packaging differences between these parts?

A: The FN682-4-06 was supplied with standard packaging. Both FN2090-4-06 and FN2080-6-06 are supplied in Tray packaging, which is standard for active production parts.

Q: Do all three parts meet the same regulatory standards?

A: All three parts are RoHS compliant and REACH unaffected. The FN2090-4-06 and FN2080-6-06 carry ROHS3 compliance. Regulatory approvals differ: FN682-4-06 holds CSA, UR, VDE; FN2090-4-06 holds CE, CSA, ENEC, UR; FN2080-6-06 holds CSA, ENEC, UR. Verify specific approval requirements for your application.

Q: Can FN2080-6-06 be used in place of FN682-4-06?

A: Yes, with consideration for the higher current rating. The FN2080-6-06 meets all core compatibility criteria and provides additional current capacity margin. This is suitable for applications where the 4A rating is adequate but design margin is desired.

Q: What determines whether a substitute part is compatible?

A: Compatibility is determined by matching filter type (single phase), configuration (two stage), voltage rating (minimum 250VAC), current rating (equal to or greater than 4A), operating frequency (DC to 400Hz), mounting type (chassis mount), and termination style (quick connect).