ELF-24V015A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-24V015A is a 2-line common mode choke manufactured by Panasonic Electronic Components, rated for 1.5A maximum current with a typical DC resistance of 274mOhm. This through-hole mounted component is designed for power line filtering applications in electronic equipment. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

ELF-24V015A

Panasonic Electronic ComponentsIn Stock: 893ELF-24V015A Datasheet

Current PartRFQ

B82734R2172B030

EPCOS - TDK ElectronicsIn Stock: 9215B82734R2172B030 Datasheet

SimilarRFQ

EV28-1.5-02-27M-X

Schaffner EMC Inc.In Stock: 1128EV28-1.5-02-27M-X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the ELF-24V015A are identified based on the following critical parameters that determine functional equivalence:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be through-hole
• Package Configuration: Must be vertical, 4 PC pin
• Current Rating: Must support minimum 1.5A operation
• DC Resistance: Must be within acceptable range for power line filtering applications
• Mechanical Compatibility: Physical dimensions must accommodate existing PCB layouts

The two identified substitutes meet these core requirements while offering active product status and improved availability compared to the obsolete ELF-24V015A.

Parameter Comparison

Engineering Selection Recommendations

B82734R2172B030 (EPCOS - TDK Electronics): This substitute offers the highest current rating at 1.7A, exceeding the original 1.5A specification. It provides active product status with ROHS3 compliance and multiple approval agencies (ENEC, UR, VDE). The component is rated for -40°C to 125°C operation, providing extended temperature range coverage. DC resistance of 320mOhm is marginally higher than the original but remains within acceptable parameters for common mode choke applications. Compact dimensions (32.50mm x 21.00mm) may require PCB layout verification for existing designs.

EV28-1.5-02-27M-X (Schaffner EMC Inc.): This substitute maintains the exact 1.5A current rating of the original part, providing direct electrical equivalence. It offers active product status with ROHS3 compliance and is rated for -25°C to 100°C operation. DC resistance of 287mOhm closely matches the original specification. Smaller physical dimensions (29.20mm x 21.00mm) require verification against existing PCB footprints and clearance requirements.

Both substitutes are active products with current availability, addressing the obsolescence of the ELF-24V015A. Selection between them depends on specific application requirements regarding current headroom, temperature range, and physical space constraints.

Frequently Asked Questions (FAQ)

Q: Can the B82734R2172B030 be used as a direct replacement for the ELF-24V015A?

A: The B82734R2172B030 meets the core functional requirements: 2-line configuration, through-hole mounting, vertical 4-pin package, and current rating exceeding 1.5A. However, its smaller physical dimensions (32.50mm x 21.00mm versus 37.00mm x 24.00mm) require verification that the component fits within existing PCB layouts and clearance zones.

Q: What is the difference in DC resistance between the substitutes and the original part?

A: The ELF-24V015A has 274mOhm typical DC resistance. The B82734R2172B030 measures 320mOhm (46mOhm higher), while the EV28-1.5-02-27M-X measures 287mOhm (13mOhm higher). Both differences are within acceptable tolerances for common mode choke filtering applications, though power dissipation calculations should account for the increased resistance values.

Q: Are both substitutes suitable for the same operating temperature range as the original?

A: The original ELF-24V015A does not specify an operating temperature range. The B82734R2172B030 operates from -40°C to 125°C, while the EV28-1.5-02-27M-X operates from -25°C to 100°C. Application requirements determine which temperature range is necessary.

Q: Do the substitutes have the same packaging as the original part?

A: All three components use vertical, 4-pin through-hole packages. However, physical dimensions differ: the ELF-24V015A measures 37.00mm x 24.00mm x 42.50mm height, the B82734R2172B030 measures 32.50mm x 21.00mm x 31.00mm height, and the EV28-1.5-02-27M-X measures 29.20mm x 21.00mm x 35.70mm height. PCB layout compatibility must be verified before implementation.

Q: Which substitute offers better compliance certifications?

A: The B82734R2172B030 carries approvals from ENEC, UR, and VDE, along with ROHS3 compliance. The EV28-1.5-02-27M-X carries ROHS3 compliance. Application-specific regulatory requirements determine which certifications are necessary.