ELF-20N022A Equivalent & Substitute Parts

Part Overview

The ELF-20N022A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 2.2A current handling capability. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity. The part features a typical DC resistance of 111mOhm and is packaged in a vertical 4-pin configuration with dimensions of 20.00mm × 32.00mm × 30.00mm (max height).

Substiute Parts

ELF-20N022A

Panasonic Electronic ComponentsIn Stock: 792ELF-20N022A Datasheet

Current PartRFQ

B82734R2232B030

EPCOS - TDK ElectronicsIn Stock: 2058B82734R2232B030 Datasheet

SimilarRFQ

SS26V-200076

KEMETIn Stock: 1014SS26V-200076 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELF-20N022A are identified based on the following critical parameters that define functional equivalence:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be through-hole
• Package Configuration: Must be vertical, 4-pin package
• Current Rating: Must support minimum 2.2A operation
• DC Resistance: Must be compatible with circuit requirements (lower DCR values indicate reduced power dissipation)
• Physical Dimensions: Must fit within or be compatible with existing PCB layouts

The two identified substitute parts—B82734R2232B030 (EPCOS - TDK Electronics) and SS26V-200076 (KEMET)—meet these core substitution criteria while offering active product status and improved compliance profiles compared to the obsolete ELF-20N022A.

Parameter Comparison

Engineering Selection Recommendations

B82734R2232B030 (EPCOS - TDK Electronics) is the primary substitute option. This part exceeds the current rating requirement (2.3A vs. 2.2A) and provides active product status with ROHS3 compliance. It carries certifications from ENEC, UR, and VDE, supporting applications requiring regulatory approval. The higher DC resistance (185mOhm vs. 111mOhm) results in increased power dissipation; thermal analysis of the target circuit is necessary to confirm acceptability. Physical dimensions are slightly larger (32.50mm × 21.00mm vs. 20.00mm × 32.00mm), requiring PCB layout verification.

SS26V-200076 (KEMET) serves as an alternative substitute. This part maintains active product status and ROHS3 compliance with a smaller footprint (26.00mm × 20.50mm). However, the current rating (2.0A) falls below the original specification (2.2A), and the DC resistance (250mOhm) is significantly higher. This option is suitable only for applications where the 2.0A limit is acceptable and thermal dissipation can be managed.

Both substitutes provide improved compliance and supply chain availability compared to the obsolete ELF-20N022A. Selection between them depends on current capacity requirements, thermal constraints, and PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the B82734R2232B030 directly replace the ELF-20N022A without circuit modification?

A: The B82734R2232B030 meets the core functional requirements (2-line, through-hole, 4-pin vertical package, ≥2.2A current rating). However, the increased DC resistance (185mOhm vs. 111mOhm) increases power dissipation. Thermal analysis of the application is required to confirm the design can accommodate this change. PCB layout must also be verified to accommodate the different footprint dimensions.

Q: Why does the SS26V-200076 have a lower current rating than the main part?

A: The SS26V-200076 is rated for 2.0A maximum current, which is below the ELF-20N022A specification of 2.2A. This part is suitable only for applications operating at or below 2.0A. For circuits requiring the full 2.2A capacity, the B82734R2232B030 is the appropriate choice.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both B82734R2232B030 and SS26V-200076 are ROHS3 compliant, whereas the original ELF-20N022A is RoHS non-compliant. This compliance improvement may be required for new designs or updated procurement specifications.

Q: What is the impact of higher DC resistance on circuit performance?

A: Higher DC resistance increases resistive power loss (P = I²R). For the B82734R2232B030 at 2.2A, the power dissipation is approximately 0.896W compared to 0.537W for the original part. This additional heat must be managed through adequate PCB copper area, thermal vias, or component spacing. The SS26V-200076 dissipates approximately 1.0W at 2.0A.

Q: Do the substitute parts fit the same PCB footprint?

A: No. The ELF-20N022A measures 20.00mm × 32.00mm, the B82734R2232B030 measures 32.50mm × 21.00mm, and the SS26V-200076 measures 26.00mm × 20.50mm. PCB layout must be reviewed and potentially modified to accommodate the different dimensions. Heights are comparable (30.00mm, 31.00mm, and 30.50mm respectively).

Q: What certifications do the substitute parts carry?

A: The B82734R2232B030 carries ENEC, UR, and VDE certifications, supporting applications requiring European and North American regulatory approval. The SS26V-200076 does not list specific approval agencies in the provided data.