CIS21J121LC

Chip Ferrite Bead Overview

The CIS21J121LC is a ferrite bead component manufactured by Samsung Electro-Mechanics. It belongs to the CIS series and is designed for surface-mount applications in an 0805 package size. The device functions as a passive filter element intended for noise suppression in electronic circuits. According to available documentation, the component has a rated current capacity of 3A. The product status is listed as obsolete in several distributor records, indicating it may no longer be actively produced or supported by the manufacturer.

Chip Ferrite Bead Feature Summary

• Surface-mount ferrite bead design for integrated circuit noise filtering
• Compact 0805 package footprint for space-constrained layouts
• Rated for 3A current handling capability

Chip Ferrite Bead Applications

• General purpose noise suppression in electronic assemblies
• Signal line filtering in consumer electronics
• Power rail decoupling in compact devices

Chip Ferrite Bead Procurement Notes

Verify availability carefully as multiple sources list this part as obsolete. Confirm final substitution options with the manufacturer before design finalization. Check RoHS compliance status as information varies across sources. Ensure the specific suffix matches your bill of materials requirements.

Chip Ferrite Bead Selection Notes

Consider the 0805 package dimensions when evaluating board space constraints. Verify that the 3A rating meets the maximum current requirements of the target application. Review impedance characteristics at relevant frequencies if detailed filtering performance is critical for the specific circuit design.

Chip Ferrite Bead Part Context

This component falls under the passive components category within Samsung Electro-Mechanics' portfolio. It is classified specifically as a ferrite bead used for electromagnetic interference suppression. The CIS series represents a range of similar filtering solutions offered by the manufacturer for various electronic applications.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Samsung Electro-Mechanics directly for official obsolescence notices and recommended alternative components suitable for the same application parameters.