CMS3-9-R

Common Mode Chokes Overview

The CMS3-9-R is a surface-mount common mode choke manufactured by Eaton - Electronics Division. It features an inductance of 400 µH at 100 kHz and supports a rated current of 1.7 A per line. The component has a typical DC resistance (DCR) of 53 mΩ. It utilizes a horizontal package with four PCB pins, measuring 3.30 mm in length, 4.65 mm in width, and 3.30 mm in height. Designed for power line filtering, it operates within a temperature range of -40°C to 125°C.

Common Mode Chokes Feature Summary

• Dual-line configuration for effective noise suppression on power lines
• Surface-mount design facilitates automated assembly processes
• High inductance value provides strong attenuation for high-frequency interference

Common Mode Chokes Applications

• Power supply input filtering
• Noise suppression in electronic equipment
• EMI reduction in compact circuits

Common Mode Chokes Procurement Notes

Verify the specific suffix and packaging option during ordering, as availability may vary between tape-and-reel and cut-tape formats. Confirm that the supplier provides original manufacturer documentation to ensure authenticity. Check for any recent product change notices regarding pin configurations or material composition before finalizing procurement plans.

Common Mode Chokes Selection Notes

Select this component when space constraints require a surface-mount solution for common mode noise reduction. Ensure the circuit's operating current does not exceed the 1.7 A rating to prevent saturation. Verify that the 400 µH inductance meets the required EMI filtering specifications at the target frequency of 100 kHz.

Common Mode Chokes Part Context

This part belongs to the CMS series of common mode chokes from Eaton - Electronics Division. The series offers various inductance values tailored for different filtering requirements while maintaining a consistent surface-mount footprint. These components are designed to replace through-hole alternatives in modern, densely packed electronic assemblies.

Common Mode Chokes Replacement Considerations

PE-62917NL by Pulse Electronics is listed as a similar alternative. Verify electrical parameters such as inductance, current rating, and physical dimensions before substitution.