Z0805C121CSMST

Overview

The KEMET Z0805C121CSMST is a signal line ferrite bead chip in the Z-SMS series. It features a 0805 (2012 metric) surface mount package with dimensions of 2.00mm length, 1.25mm width, and a maximum height of 1.05mm. The component provides an impedance of 120 Ohms at 100 MHz and has a DC resistance (DCR) of 300 milliohms maximum. It supports a rated current of 400mA and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides electromagnetic interference suppression for single signal lines
• Features low DC resistance for minimal signal loss
• Designed for high-temperature stability up to 125°C

Applications

• Signal line filtering in electronic circuits
• EMI suppression in compact surface mount designs

Procurement Notes

Verify component status as this part may be discontinued or obsolete. Confirm availability through authorized distributors. Ensure replacement components meet identical electrical specifications including impedance, current rating, and physical footprint. Check for RoHS compliance and moisture sensitivity levels before procurement.

Selection Notes

Select based on required impedance at target frequency and current handling capacity. The 0805 package suits space-constrained layouts. Verify thermal performance requirements against the 125°C maximum operating limit. Consider DCR impact on circuit efficiency when choosing alternatives.

Part Context

This component belongs to KEMET's Z-SMS series of ferrite beads. These are general-purpose EMI suppression devices designed for surface mount technology. The series offers various impedance values and current ratings in standard footprints like 0805.

Replacement Considerations

Public confirmed substitute: BLM21BB121SN1D by Murata Electronics.