ELF-20N020A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-20N020A is a 2-line common mode choke manufactured by Panasonic Electronic Components, rated for 2A maximum current with a typical DC resistance of 134mOhm. This through-hole component is designed for power line filtering applications in electronic equipment. The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and repair applications. Substitute parts must maintain compatibility across current rating, number of lines, mounting type, and physical dimensions while meeting modern compliance standards.

Substiute Parts

ELF-20N020A

Panasonic Electronic ComponentsIn Stock: 989ELF-20N020A Datasheet

Current PartRFQ

B82734R2202B030

EPCOS - TDK ElectronicsIn Stock: 3317B82734R2202B030 Datasheet

SimilarRFQ

SS26V-200076

KEMETIn Stock: 1014SS26V-200076 Datasheet

SimilarRFQ

TF2628V-702Y2R5-01

TDK CorporationIn Stock: 783TF2628V-702Y2R5-01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELF-20N020A is determined by the following mandatory parameters:

• Number of Lines: Must be 2 (all substitute parts meet this requirement)
• Current Rating (Max): Must be ≥ 2A (substitute parts range from 2A to 2.5A)
• Mounting Type: Must be Through Hole (all substitute parts meet this requirement)
• Package / Case: Must be Vertical, 4 PC Pin (all substitute parts meet this requirement)
• DC Resistance (DCR): Substitute parts range from 134mOhm to 250mOhm, within acceptable tolerance for common mode choke applications

Three substitute parts meet these criteria: B82734R2202B030 (EPCOS - TDK Electronics), SS26V-200076 (KEMET), and TF2628V-702Y2R5-01 (TDK Corporation). Each maintains the core electrical and mechanical compatibility required for direct substitution in through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete ELF-20N020A.

B82734R2202B030 (EPCOS - TDK Electronics) offers the widest operating temperature range (-40°C to 125°C) and carries multiple approval certifications (ENEC, UR, VDE). This part is ROHS3 compliant and REACH affected. The higher DC resistance (240mOhm) is acceptable for applications where the original 134mOhm specification allows tolerance.

SS26V-200076 (KEMET) provides a compact footprint (26.00mm x 20.50mm) with ROHS3 compliance and REACH unaffected status. Operating temperature range is -25°C to 120°C with 250V AC voltage rating. DC resistance is 250mOhm.

TF2628V-702Y2R5-01 (TDK Corporation) offers the highest current rating (2.5A) with the lowest height profile (28.00mm) among substitutes. This part is ROHS3 compliant with DC resistance of 200mOhm and operating temperature range of -20°C to 120°C.

Selection should prioritize application-specific requirements: temperature extremes favor B82734R2202B030, space-constrained designs favor TF2628V-702Y2R5-01, and regulatory compliance with REACH unaffected status favors SS26V-200076.

Frequently Asked Questions (FAQ)

Q: Can the ELF-20N020A be directly replaced with any of these substitute parts?

A: Yes, all three substitute parts maintain the mandatory compatibility parameters: 2-line configuration, through-hole mounting, vertical 4-pin package, and current ratings at or above 2A. Physical dimensions vary slightly but remain within acceptable PCB layout tolerances for standard through-hole applications.

Q: What is the significance of the DC resistance differences between the main part and substitutes?

A: The ELF-20N020A has a typical DCR of 134mOhm, while substitutes range from 200mOhm to 250mOhm. Higher DCR results in increased power dissipation and heat generation. Selection depends on thermal design margins and filtering performance requirements of the specific application. All values remain within typical common mode choke specifications.

Q: Are there compliance differences I should consider?

A: The original ELF-20N020A is RoHS non-compliant. All three substitutes are ROHS3 compliant. B82734R2202B030 carries additional certifications (ENEC, UR, VDE) and is REACH affected. SS26V-200076 is REACH unaffected. TF2628V-702Y2R5-01 has no additional certifications listed. Compliance requirements depend on end-product regulations and target markets.

Q: Do physical dimension differences affect PCB compatibility?

A: All substitute parts use vertical 4-pin through-hole packages with similar height profiles (28.00mm to 31.00mm). Length and width vary: B82734R2202B030 is the largest (32.50mm x 21.00mm), while SS26V-200076 is the most compact (26.00mm x 20.50mm). PCB layout must accommodate these variations, but standard through-hole spacing remains compatible.

Q: Which substitute offers the best thermal performance?

A: B82734R2202B030 supports the widest operating temperature range (-40°C to 125°C), making it suitable for extreme temperature environments. TF2628V-702Y2R5-01 offers the lowest profile and highest current rating (2.5A), which may reduce thermal stress in current-limited applications. SS26V-200076 operates within -25°C to 120°C.

Q: What is the inventory status of these parts?

A: B82734R2202B030 has 3252 pieces in stock, SS26V-200076 has 995 pieces, and TF2628V-702Y2R5-01 has 676 pieces. All are listed as new original stock, ensuring availability for immediate procurement.