CMS1-1-R

Common Mode Chokes Overview

The CMS1-1-R is a surface-mount common mode choke from the Eaton CMS series. It features an inductance of 4.5 µH at 100 kHz and supports a maximum current rating of 7 A. The component has a typical DC resistance (DCR) of 2.7 mOhm. Its physical dimensions are 9.4 mm in length, 7.2 mm in width, and 2.6 mm in height. The device provides 300 VDC isolation and operates within a temperature range up to 160°C.

Common Mode Chokes Feature Summary

• Surface-mount toroidal design for compact integration
• Provides 300 VDC electrical isolation
• High thermal stability with 160°C maximum total temperature rating

Common Mode Chokes Applications

• Battery management systems
• Power line filtering
• Common mode noise suppression in electronic circuits

Common Mode Chokes Procurement Notes

Verify the specific package type and lead configuration against your PCB footprint requirements. Confirm that the 7 A current rating and 4.5 µH inductance meet your circuit's performance specifications. Ensure compatibility with your assembly process for surface-mount components. Check for any recent product change notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Common Mode Chokes Selection Notes

Select this component when high current handling and low DC resistance are required in a small surface-mount form factor. The 160°C temperature rating makes it suitable for applications with elevated thermal environments. Compare its isolation voltage and inductance values against alternative chokes to ensure adequate noise suppression for your specific frequency range and power line requirements.

Common Mode Chokes Part Context

This component belongs to the Eaton CMS series of wire-wound surface-mount inductors. The series offers multiple size options to balance performance and board space constraints. These chokes are designed for robust operation in demanding electronic environments, providing reliable common mode noise attenuation while maintaining low insertion loss due to their low DC resistance characteristics.

Common Mode Chokes Replacement Considerations

Direct substitutes must match the 4.5 µH inductance, 7 A current rating, and 9.4 x 7.2 x 2.6 mm footprint. Verify equivalent DCR and isolation voltage ratings. Consult manufacturer cross-reference lists for verified replacements with identical electrical and mechanical specifications.