ELF-24V080A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-24V080A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 8A current handling capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part features a compact vertical 4-pin configuration with 15mOhm maximum DC resistance, suitable for power line filtering applications in industrial and commercial equipment.

Substiute Parts

ELF-24V080A

Panasonic Electronic ComponentsIn Stock: 713ELF-24V080A Datasheet

Current PartRFQ

B82725J2802N020

EPCOS - TDK ElectronicsIn Stock: 1957B82725J2802N020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-24V080A is determined by the following critical parameters:

Primary Matching Criteria:

• Number of Lines: 2 (fixed requirement)
• Current Rating (Max): 8A (fixed requirement)
• Mounting Type: Through Hole (fixed requirement)
• Package / Case: Vertical, 4 PC Pin (fixed requirement)

Secondary Compatibility Criteria:

• DC Resistance (DCR): Maximum 31mOhm (allowable tolerance range for functional equivalence)
• Physical Dimensions: Similar footprint within manufacturing tolerances
• Electrical Performance: Inductance and frequency response suitable for power line filtering

The B82725J2802N020 from EPCOS - TDK Electronics meets all primary matching criteria and operates within acceptable secondary parameters for direct substitution in power line filtering applications.

Parameter Comparison

Engineering Selection Recommendations

The B82725J2802N020 is the designated substitute for the obsolete ELF-24V080A based on the following engineering factors:

Functional Equivalence: Both components share identical 2-line configuration, 8A current rating, through-hole mounting, and vertical 4-pin package geometry, ensuring direct functional replacement in power line filtering circuits.

Compliance Advantage: The B82725J2802N020 holds active product status with ROHS3 compliance and international certifications (ENEC, UR, VDE), providing regulatory alignment for new designs and production continuity. The ELF-24V080A, being obsolete and RoHS non-compliant, presents supply chain and regulatory constraints.

Electrical Performance: The B82725J2802N020 operates at 250V AC with specified operating temperature range (-40°C ~ 125°C), offering defined performance boundaries. The DCR specification of 31mOhm (typical) represents a 2x increase over the ELF-24V080A; however, this remains within acceptable tolerance for common mode choke applications where DCR is secondary to inductance and filtering performance.

Physical Compatibility: Dimensional variations (40.40mm L vs. 37.00mm L; 40.00mm H vs. 42.50mm H) are within typical PCB layout tolerances for through-hole components. Pin configuration remains identical, ensuring direct socket compatibility.

Frequently Asked Questions (FAQ)

Q: Can the B82725J2802N020 directly replace the ELF-24V080A without circuit modification?

A: Yes. Both components share identical electrical specifications for current rating (8A), line configuration (2-line), and package type (vertical 4-pin through-hole). The higher DCR of the substitute (31mOhm vs. 15mOhm) results in marginally increased power dissipation but does not affect filtering functionality in standard power line applications.

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

A: DC Resistance (DCR) determines resistive losses in the choke. The B82725J2802N020 exhibits 31mOhm typical DCR compared to 15mOhm maximum for the ELF-24V080A. In 8A applications, this represents approximately 1.92W additional dissipation (I²R loss). Thermal management should be evaluated for high-ambient or continuous-duty applications.

Q: Are there dimensional constraints for PCB layout?

A: The B82725J2802N020 is slightly larger (40.40mm L x 40.00mm H) than the ELF-24V080A (37.00mm L x 42.50mm H). Verify PCB footprint clearance, particularly for height-constrained designs. Pin spacing remains identical, ensuring through-hole compatibility.

Q: What certifications does the substitute part carry?

A: The B82725J2802N020 holds ENEC, UR, and VDE approvals with ROHS3 compliance and REACH applicability. These certifications support regulatory requirements for industrial and commercial power line filtering applications.

Q: Is the substitute part readily available?

A: The B82725J2802N020 is classified as active product status with 1873 pieces in stock, ensuring supply continuity. The ELF-24V080A is obsolete with limited remaining inventory (694 pieces), making transition to the substitute necessary for long-term production planning.