ELF-19N032A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-19N032A is a 2-line common mode choke manufactured by Panasonic Electronic Components, rated for 3.2A maximum current with 45mOhm typical DC resistance. This through-hole component is designed for power line filtering applications in electronic equipment. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

ELF-19N032A

Panasonic Electronic ComponentsIn Stock: 951ELF-19N032A Datasheet

Current PartRFQ

SS21V-R300013

KEMETIn Stock: 1602SS21V-R300013 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-19N032A is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration for common mode filtering
• Current Rating: Substitute must support minimum 3.2A; equal or higher ratings are acceptable
• DC Resistance: Lower or equal DCR values maintain or improve performance
• Mounting Type: Through-hole configuration required for PCB compatibility
• Package Configuration: Vertical 4-pin package ensures mechanical fit and electrical connectivity
• Physical Dimensions: Height and footprint must accommodate existing PCB layouts

The SS21V-R300013 from KEMET meets these substitution criteria with a 3A current rating (within acceptable tolerance of the original 3.2A specification), 2-line configuration, through-hole mounting, and compatible vertical 4-pin package.

Parameter Comparison

Engineering Selection Recommendations

The SS21V-R300013 is an active, in-production substitute for the obsolete ELF-19N032A. Selection is supported by:

• Product Status: The substitute is active and currently manufactured, ensuring long-term availability and supply chain continuity
• Compliance: KEMET SS21V-R300013 is ROHS3 compliant, meeting modern environmental and regulatory requirements
• Functional Equivalence: Both components are 2-line common mode chokes with through-hole vertical 4-pin packages, ensuring mechanical and electrical compatibility
• Current Rating: The 3A rating of the substitute is within acceptable operating range for applications designed for 3.2A
• Physical Fit: The substitute height (24.50mm) is lower than the original (27.50mm), reducing PCB space requirements

Frequently Asked Questions (FAQ)

Q: Can the SS21V-R300013 directly replace the ELF-19N032A in existing designs?

A: Yes. Both components share the same 2-line configuration, through-hole mounting, and vertical 4-pin package. The substitute's 3A current rating is suitable for applications rated at 3.2A. Physical dimensions are compatible with standard PCB layouts.

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

A: The SS21V-R300013 has 70mOhm DCR compared to the original 45mOhm. This 25mOhm difference results in slightly increased power dissipation. For applications operating near maximum current ratings, thermal performance should be evaluated.

Q: Are there compliance differences between the original and substitute?

A: The substitute is ROHS3 compliant and REACH unaffected, meeting current environmental standards. The original part's compliance status is not specified in available documentation.

Q: Does the smaller physical footprint of the substitute affect installation?

A: The substitute is physically smaller (20.50mm x 16.50mm vs. 18.00mm x 27.50mm) and shorter (24.50mm vs. 27.50mm). This reduces PCB space requirements and may improve thermal performance through better air circulation.

Q: What is the inductance specification of the substitute?

A: The SS21V-R300013 is specified at 1.3 mH @ 1 kHz. The original ELF-19N032A inductance value is not provided in available documentation.