CM9900-685

Common Mode Chokes Overview

The Delevan CM9900-685 is a through-hole common mode choke filter designed for PCB mounting. It features a ferrite core and radial termination with a 5.1 mm lead spacing. The component provides an inductance of 6.8 mH at a test frequency of 1 kHz, with a tolerance of ±25%. It supports a maximum DC current of 350 mA and has a maximum DC resistance of 1.24 Ohms. The device operates within a temperature range of -55°C to +125°C. Physical dimensions are 21.3 mm in length, 18.8 mm in width, and 17 mm in height.

Common Mode Chokes Feature Summary

• Radial through-hole construction for direct PCB integration
• Ferrite core design for effective common mode noise suppression
• Unshielded configuration suitable for standard electromagnetic environments

Common Mode Chokes Applications

• Data line filtering in electronic circuits
• Power supply input stages requiring common mode noise reduction
• Signal integrity protection in communication interfaces

Common Mode Chokes Procurement Notes

Verify the specific suffix designation when ordering, as the CM9900R series may differ from the CM9900 series regarding RoHS compliance status. Confirm that the required inductance value matches the 6.8 mH specification exactly. Ensure the PCB layout accommodates the 5.1 mm lead spacing and the physical footprint dimensions. Check for availability constraints as distribution stocks vary by region.

Common Mode Chokes Selection Notes

Select this component when a 6.8 mH inductance is required for common mode noise attenuation. The 350 mA current rating must exceed the expected operating current to prevent saturation. Verify that the unshielded nature does not interfere with nearby sensitive components. Compare against the CM9900R-685 if RoHS compliance is a mandatory project requirement.

Common Mode Chokes Part Context

This part belongs to the Delevan CM9900 series of common mode chokes. It shares physical dimensions with other variants in the family but differs in electrical characteristics such as inductance and current handling. The series utilizes ferrite cores and offers various inductance values tailored for different filtering applications.

Common Mode Chokes Replacement Considerations

The CM9900R-685 is a related variant within the same manufacturer's lineup. Verify RoHS compliance differences between the CM9900 and CM9900R prefixes before substitution.