CIS10P121AC

Chip Ferrite Bead Overview

The CIS10P121AC is a multi-layer ferrite bead from the Samsung Electro-Mechanics CIS10P series, designed for EMI/RFI suppression in high-current applications. It features an impedance of 120 Ohms at 100MHz with a tolerance of ±25%. The component supports a rated current of 3A and exhibits a maximum DC resistance of 0.03 Ohms. Housed in a standard 0402 surface-mount package with dimensions of 1.0mm x 0.5mm and a thickness of 0.6±0.15mm, it is supplied in cut tape packaging.

Chip Ferrite Bead Feature Summary

• Multi-layer construction for effective electromagnetic interference reduction
• High current handling capability suitable for power line filtering
• Compact 0402 footprint for dense circuit board layouts

Chip Ferrite Bead Applications

• EMI suppression on high-current data lines
• RFI filtering in portable electronic devices
• Noise reduction in power supply circuits

Chip Ferrite Bead Procurement Notes

Verify component status as this specific part number may be obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers. Request updated datasheets to ensure technical specifications match current design requirements. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Chip Ferrite Bead Selection Notes

Select this component when a low-impedance path is required for high-frequency noise while maintaining high current capacity. The 120 Ohm impedance at 100MHz targets specific noise frequencies common in digital circuits. Ensure the PCB layout accommodates the 0402 package size and that the 3A rating exceeds the maximum operating current of the protected line to prevent saturation.

Chip Ferrite Bead Part Context

This ferrite bead belongs to the CIS10P family, which focuses on high-current performance within small surface-mount packages. Unlike general-purpose beads, this series prioritizes low DC resistance to minimize voltage drop under load. It serves as a passive filter element distinct from active noise cancellation solutions, providing simple insertion loss characteristics for broadband noise attenuation.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative components based on identical impedance curves, current ratings, and physical dimensions before substitution.