CMS3-7-R

Common Mode Chokes Overview

The CMS3-7-R is a surface mount common mode choke from the Eaton CMS series, designed for power line filtering. It features an inductance of 258 µH measured at 100 kHz and supports a rated current of 2.45 A. The component has a typical DC resistance (DCR) of 27 mΩ per line. It utilizes a horizontal package with four PCB pins, measuring 4.15 mm in length, 2.20 mm in width, and up to 4.15 mm in height. Operating temperatures range from -40°C to 160°C.

Common Mode Chokes Feature Summary

• Surface mount construction for automated assembly
• High temperature stability up to 160°C
• Dual-line configuration for balanced noise suppression

Common Mode Chokes Applications

• Power supply input filtering
• Data line protection
• Automotive electronics

Common Mode Chokes Procurement Notes

Verify the specific suffix against official documentation to confirm pinout orientation and tolerance specifications. Confirm RoHS compliance status through the manufacturer's latest product change notice or datasheet revision history before finalizing procurement plans.

Common Mode Chokes Selection Notes

Select this component when high-temperature operation is required due to its 160°C rating. Ensure the board layout accommodates the horizontal footprint dimensions. Verify that the 2.45A current rating meets the circuit's continuous load requirements without exceeding thermal limits.

Common Mode Chokes Part Context

This part belongs to the Eaton CMS series of surface mount common mode chokes. The series offers various inductance values optimized for EMI suppression in compact electronic designs. The CMS3-7-R specifically targets applications requiring robust performance in elevated temperature environments.

Common Mode Chokes Replacement Considerations

Consult Eaton's official cross-reference tools for verified substitutes. Ensure any replacement matches the 258 µH inductance, 2.45A current rating, and 4.15x2.20mm footprint.