ELF-21V010A Equivalent & Substitute Parts

Part Overview

The ELF-21V010A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 1A current handling capability. This component features a typical DC resistance of 515mOhm and is housed in a vertical 4-pin package with dimensions of 29.00mm × 21.00mm × 35.50mm (max height).

The ELF-21V010A carries an obsolete product status. Identifying functionally equivalent substitute components is essential for design continuity, procurement planning, and system reliability in applications where this part is currently specified or deployed.

Substiute Parts

ELF-21V010A

Panasonic Electronic ComponentsIn Stock: 693ELF-21V010A Datasheet

Current PartRFQ

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

Substitution eligibility for the ELF-21V010A is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be through-hole
• Package Configuration: Must be vertical, 4-pin package
• Physical Dimensions: Length and width must be compatible with 29.00mm × 21.00mm footprint; height must not exceed 35.50mm
• Current Rating: Must support minimum 1A operation
• DC Resistance: Must not exceed 515mOhm to maintain equivalent electrical performance

The substitute part EV28-1.5-02-27M-X manufactured by Schaffner EMC Inc. meets these substitution criteria. This part maintains the 2-line configuration, through-hole mounting, vertical 4-pin package, and compatible physical dimensions (29.20mm L × 21.00mm W × 35.70mm max height). The EV28-1.5-02-27M-X provides superior current handling at 1.5A and lower DC resistance at 287mOhm, while maintaining mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The EV28-1.5-02-27M-X is a direct substitute for the obsolete ELF-21V010A based on the following engineering criteria:

Product Status Alignment: The EV28-1.5-02-27M-X maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete ELF-21V010A.

Mechanical Compatibility: Both components share identical mounting type (through-hole), package configuration (vertical, 4-pin), and compatible physical dimensions. The EV28-1.5-02-27M-X dimensions (29.20mm × 21.00mm × 35.70mm) are within acceptable tolerance of the original part (29.00mm × 21.00mm × 35.50mm), permitting direct PCB footprint compatibility.

Electrical Performance: The EV28-1.5-02-27M-X exceeds the electrical specifications of the ELF-21V010A. The substitute provides 1.5A current rating versus 1A, and 287mOhm DC resistance versus 515mOhm, delivering improved performance margins in the same functional category.

Compliance and Certifications: The EV28-1.5-02-27M-X is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. Both components carry EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can the EV28-1.5-02-27M-X be used as a direct replacement for the ELF-21V010A on existing PCBs?

A: Yes. Both components are 2-line common mode chokes with through-hole, vertical 4-pin package configurations. Physical dimensions are compatible (29.20mm vs. 29.00mm length, 21.00mm width, and 35.70mm vs. 35.50mm height). No PCB redesign is required.

Q: What are the key differences between these two parts?

A: The EV28-1.5-02-27M-X provides superior electrical performance with 1.5A current rating (versus 1A) and lower DC resistance at 287mOhm (versus 515mOhm). The substitute is an active product with specified AC voltage rating (250V) and operating temperature range (-25°C to 100°C), whereas the original part is obsolete with limited specification data.

Q: Are there any compatibility concerns with the substitute part?

A: No compatibility concerns exist for standard through-hole PCB applications. The substitute maintains the same pin configuration, mounting type, and footprint compatibility. The improved electrical specifications of the EV28-1.5-02-27M-X provide additional design margin.

Q: What is the inductance specification of the substitute part?

A: The EV28-1.5-02-27M-X is specified at 27 mH @ 10 kHz. The original ELF-21V010A does not provide inductance data in the available specifications.

Q: Is the EV28-1.5-02-27M-X available in the same packaging format?

A: The EV28-1.5-02-27M-X is supplied in bulk packaging, whereas the ELF-21V010A was supplied in standard packaging. Both components use identical through-hole, vertical 4-pin package configuration suitable for PCB assembly.