CM9900-823

Common Mode Chokes Overview

The Delevan CM9900-823 is a through-hole common mode choke designed for PCB mounting. It features an inductance of 82 µH with a tolerance of ±25%, measured at a test frequency of 1 kHz. The component has a maximum DC resistance of 0.023 Ohms and supports a maximum DC current of 2.3 A. Physical dimensions are 21.3 mm in length, 18.8 mm in width, and 17 mm in height, with a lead spacing of 5.1 mm. It operates within a temperature range of -55°C to +125°C and utilizes ferrite core material.

Common Mode Chokes Feature Summary

• Provides common mode noise suppression for two-line applications using ferrite core technology.
• Designed for radial through-hole PCB mounting with unshielded construction.

Common Mode Chokes Applications

• Data line filtering
• Power supply input stages
• Signal integrity protection

Common Mode Chokes Procurement Notes

Verify the specific manufacturer source, as API acquired Delevan's components. Confirm RoHS compliance status directly with the supplier, as documentation varies by batch and distributor. Ensure the ordering suffix matches the required packaging format, typically bulk or reel, and validate the lead time requirements against current supply chain conditions before finalizing procurement orders.

Common Mode Chokes Selection Notes

Select this component when a low DC resistance and high current handling capability of 2.3 A are required for common mode noise reduction. The 82 µH inductance value is suitable for higher frequency noise attenuation compared to higher inductance variants in the series. Ensure the physical footprint fits the PCB layout constraints and that the operating temperature range meets the environmental specifications of the target application.

Common Mode Chokes Part Context

The CM9900-823 belongs to the Delevan CM9900 series of common mode chokes. This series is characterized by its robust ferrite core construction and through-hole radial pin configuration. The part is manufactured under the API Delevan brand following corporate acquisitions, maintaining the established electrical and mechanical specifications of the original Delevan product line for industrial and commercial electronics.

Common Mode Chokes Replacement Considerations

Cross-reference with other CM9900 series variants such as CM9900-683 or CM9900-565 if different inductance values are acceptable. Verify that substitute parts maintain the same 5.1 mm lead spacing and 21.3 x 18.8 mm footprint to ensure compatibility with existing PCB layouts without requiring design modifications.

Common Mode Chokes FAQ

What is the test frequency for the inductance specification?

The inductance of 82 µH is specified at a test frequency of 1 kHz.

Is the CM9900-823 shielded?

No, the CM9900-823 is an unshielded common mode choke.