ELF-24V010A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-24V010A is a 2-line common mode choke (CMC) designed for through-hole mounting with a maximum current rating of 1A and typical DC resistance of 608mOhm. Manufactured by Panasonic Electronic Components, this component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts is essential for ongoing system maintenance, design updates, and procurement continuity.

Substiute Parts

ELF-24V010A

Panasonic Electronic ComponentsIn Stock: 958ELF-24V010A Datasheet

Current PartRFQ

B82725J2102N020

EPCOS - TDK ElectronicsIn Stock: 978B82725J2102N020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-24V010A is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration for common mode filtering
• Current Rating: Minimum 1A to support the original circuit requirements
• Mounting Type: Through-hole mounting for PCB compatibility
• Package Configuration: Vertical, 4-pin package for footprint compatibility
• DC Resistance (DCR): Electrical performance parameter affecting insertion loss and heat dissipation

The substitute part B82725J2102N020 from EPCOS - TDK Electronics meets these core substitution criteria while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The B82725J2102N020 serves as a direct substitute for the obsolete ELF-24V010A based on matching core electrical and mechanical parameters: 2-line configuration, 1A current rating, through-hole mounting, and vertical 4-pin package.

Key advantages of the B82725J2102N020 substitute:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance meets current environmental and regulatory requirements
• Multiple approval certifications (ENEC, UR, VDE) provide enhanced quality assurance
• Specified operating temperature range (-40°C ~ 125°C) and AC voltage rating (250V) provide documented performance boundaries

Physical dimensions show minor variations: the substitute is slightly longer (40.40mm vs 37.00mm) and narrower (21.50mm vs 24.00mm) with reduced height (40.00mm vs 42.50mm). PCB layout verification is necessary to confirm footprint compatibility within the available mounting space.

The DC resistance of the substitute (1.05Ohm typical) is higher than the original part (608mOhm typical), which will result in increased insertion loss and heat generation. Circuit performance analysis is required to determine if this resistance increase is acceptable for the intended application.

Frequently Asked Questions (FAQ)

Q: Can the B82725J2102N020 be used as a direct replacement for the ELF-24V010A?

A: The B82725J2102N020 matches the critical substitution parameters: 2-line common mode choke, 1A current rating, through-hole mounting, and vertical 4-pin package. However, physical dimensions differ slightly, and DC resistance is higher. PCB layout and circuit performance analysis are required before implementation.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The B82725J2102N020 has a DC resistance of 1.05Ohm compared to the original 608mOhm. This increased resistance will result in higher insertion loss and greater heat dissipation during operation. The circuit design must accommodate this change to ensure proper filtering performance and thermal management.

Q: Are there compliance differences between the two parts?

A: Yes. The ELF-24V010A is RoHS non-compliant, while the B82725J2102N020 is ROHS3 compliant. The substitute also carries multiple international approvals (ENEC, UR, VDE) and specifies operating temperature and AC voltage ratings, whereas the original part does not provide these specifications.

Q: Will the substitute part fit in the same PCB footprint?

A: The substitute dimensions are 40.40mm L x 21.50mm W x 40.00mm H compared to the original 37.00mm L x 24.00mm W x 42.50mm H. The substitute is longer and narrower with slightly reduced height. Physical verification of available mounting space is necessary to confirm compatibility.

Q: What is the product status difference, and why does it matter?

A: The ELF-24V010A is obsolete, meaning Panasonic no longer manufactures or supports this component. The B82725J2102N020 is active, ensuring continued availability, technical support, and supply chain reliability for future production and maintenance needs.