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ELF-21N030A is listed in the Common Mode Chokes range at ChipApex. The manufacturer field lists Panasonic Electronic Components. Its product description is CMC 3A 2LN TH. Review the specifications below when checking this part for your BOM.
The ELF-21N030A is a two-line common mode choke manufactured by Panasonic Electronic Components. It features a through-hole mounting configuration with a nominal current rating of 3 A and a typical direct current resistance (DCR) of 56 mOhm. The component utilizes a metal composite core material, which provides low saturation characteristics and stable performance over temperature variations. This design supports high-frequency applications requiring efficient noise suppression.
Verify the specific manufacturer documentation to confirm RoHS compliance status, as sources indicate potential variability. Ensure the selected variant matches the required through-hole package dimensions and lead spacing for your PCB layout. Cross-reference the DCR and current ratings against your circuit's operational limits to guarantee reliable performance under load conditions.
Select this component when designing circuits that require robust common mode noise reduction with minimal insertion loss. The metal composite core offers advantages over traditional ferrite cores regarding saturation handling. Consider the 3 A current rating and 56 mOhm resistance to ensure compatibility with your power budget and signal integrity requirements.
This component belongs to the Panasonic Electronic Components lineup of electromagnetic interference filters. Common mode chokes are essential passive components used to suppress unwanted high-frequency noise on differential or multi-conductor lines without affecting the desired signal. They are widely integrated into communication interfaces and power supply inputs.
No public confirmed substitute part numbers are available in the provided source material.
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