CM9900-185

Common Mode Chokes Overview

The Delevan CM9900-185 is a through-hole PC mount common mode choke designed for data line filtering. It features a ferrite core and radial termination with a 5.1 mm lead spacing. The component provides an inductance of 1800 µH at a test frequency of 1 kHz, with a tolerance of ±25%. It supports a maximum DC current of 700 mA and has a maximum DC resistance of 306 mOhms. The unit operates within a temperature range of -55 °C to +125 °C and measures 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 PCB mounting
• Ferrite core design for common mode noise suppression
• Unshielded configuration suitable for general EMI filtering

Common Mode Chokes Applications

• Data line filtering in electronic circuits
• Common mode noise suppression in signal transmission paths
• EMI mitigation in equipment requiring through-hole chokes

Common Mode Chokes Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets may be managed by other entities. Confirm RoHS compliance status directly with the supplier, as documentation indicates potential variations. Ensure the required quantity aligns with standard packaging multiples, typically 100 units per bulk package. Validate that the 700 mA current rating meets the application's thermal requirements under worst-case operating conditions.

Common Mode Chokes Selection Notes

Select this component when a 1800 µH inductance value is required for common mode rejection in low-current applications. The 5.1 mm lead spacing must match the target PCB footprint. Consider the unshielded nature of the device regarding proximity to sensitive components. Verify that the 306 mOhm DC resistance does not cause excessive voltage drop or heating in the specific circuit topology.

Common Mode Chokes Part Context

This part belongs to the CM9900 series of PC mount common mode chokes manufactured by Delevan. The series offers various inductance values tailored for different filtering needs while maintaining consistent physical dimensions and mounting characteristics. These components are categorized under inductors, chokes, and coils, specifically designed for through-hole assembly on printed circuit boards.

Common Mode Chokes Replacement Considerations

Cross-reference with other CM9900 series variants such as CM9900R-473 or CM9900R-683 if different inductance values are acceptable. Ensure any substitute maintains the same 5.1 mm lead pitch and 21.3 x 18.8 x 17 mm form factor to fit existing board layouts without mechanical modification.