ELF-21N018A

Common Mode Chokes Overview

The ELF-21N018A is a single-phase common mode line filter from the Panasonic Type 21N series. It provides electromagnetic interference (EMI) suppression for power lines with an inductance of 18 mH and a rated current of 1.8 A. The component utilizes through-hole mounting technology, featuring dimensions of 29.0 mm length, 20.0 mm width, and 19.5 mm height.

Common Mode Chokes Feature Summary

• Designed for attenuation of both common and normal mode noise
• Offers excellent attenuation characteristics for EMI suppression
• Utilizes through-hole mounting suitable for standard PCB assembly

Common Mode Chokes Applications

• Power supply input filtering
• Audio/Video equipment noise reduction
• Communication device signal integrity maintenance

Common Mode Chokes Procurement Notes

Verify the specific suffix designation against official documentation to confirm exact electrical tolerances and mechanical variations. Confirm RoHS compliance status directly with the manufacturer or authorized distributors prior to procurement, as regulatory status may vary by production batch.

Common Mode Chokes Selection Notes

Select this component when 18 mH inductance at 1.8 A is required for single-phase applications. Ensure the through-hole footprint matches the target PCB layout. Compare against the broader Type 21N series if different inductance values or current ratings are needed for the specific circuit design.

Common Mode Chokes Part Context

This part belongs to the Panasonic ELF-21N series of combination line filters. These components are engineered for high-density mounting and provide compact solutions for noise attenuation in electronic systems requiring reliable EMI performance in power line applications.

Common Mode Chokes Replacement Considerations

Consult official substitution lists for compatible parts within the ELF-21N series. Verify that alternative components match the 18 mH inductance and 1.8 A current rating requirements before implementation.