CMS3-5-R

Common Mode Chokes Overview

The CMS3-5-R is a surface-mount common mode choke from the Eaton CMS series, designed for power line filtering. It features an inductance of 146 µH at 100 kHz and supports a maximum current of 3.1 A. The component has a typical DC resistance (DCR) of 17 mΩ per line. It utilizes a two-line configuration with a horizontal package footprint measuring 11.43 mm x 11.43 mm and a maximum height of 6.00 mm. Operating temperatures range from -40°C to 160°C.

Common Mode Chokes Feature Summary

• Surface-mount toroidal construction for compact PCB integration
• High thermal stability supporting operation up to 160°C
• Dual-line design for effective common mode noise suppression

Common Mode Chokes Applications

• Power supply input filtering
• Data line noise suppression
• EMI reduction in electronic equipment

Common Mode Chokes Procurement Notes

Verify the specific ordering suffix matches the required packaging format, such as tape and reel or cut tape, as availability varies by distributor. Confirm RoHS compliance status and ensure the component meets the required MSL rating for your assembly process. Cross-reference the manufacturer part number with official datasheets to confirm electrical specifications before procurement.

Common Mode Chokes Selection Notes

Select this component when high current handling and wide temperature tolerance are required for surface-mount applications. The 146 µH inductance value provides significant attenuation for common mode interference. Ensure the physical dimensions fit within the designated board space and that the 3.1 A current rating exceeds the circuit's operational requirements.

Common Mode Chokes Part Context

This component belongs to the Eaton CMS series of surface-mount common mode inductors. The series offers multiple inductance values and current ratings within a standardized footprint family. These components are engineered to replace through-hole alternatives in modern high-density electronics manufacturing processes.

Common Mode Chokes Replacement Considerations

CMS3-2-R: Lower inductance (45 µH) and higher current (5.1 A). CMS3-6-R: Higher inductance (217 µH) and lower current (2.85 A). Verify pinout compatibility and thermal performance when substituting.