Z0402C121CSMST

Overview

The KEMET Z0402C121CSMST is a single-line ferrite chip bead designed for surface mount technology in a 0402 (1005 metric) package. It provides an impedance of 120 ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 300 mA and features a maximum DC resistance of 250 milliohms. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides high impedance attenuation for noise suppression in high-frequency circuits
• Compact 0402 surface mount footprint suitable for space-constrained designs
• Capable of handling specified DC bias currents without saturation

Applications

• High-speed data line filtering
• Power supply output noise reduction
• Clock signal integrity enhancement

Procurement Notes

Verify the specific suffix 'C' against official KEMET documentation to confirm impedance tolerance and material composition, as suffixes define critical electrical variations. Confirm end-of-life status and lead times directly with authorized distributors, as availability may be limited due to obsolescence notices found in public listings.

Selection Notes

Select this component when a 120-ohm impedance at 100 MHz is required for EMI suppression in compact layouts. Ensure the 300 mA current rating meets the circuit's DC load requirements. Verify that the 0402 package size aligns with the PCB design constraints and that the operating temperature range covers the application environment.

Part Context

This part belongs to the KEMET Z-SMS series of ferrite chip beads. These components are engineered for general-purpose noise suppression in electronic circuits. The series offers various impedance values and current ratings within standard case sizes to support diverse filtering needs in consumer and industrial electronics.

Replacement Considerations

Public sources indicate the Z0402C121BSMST as a related variant within the same series. Verify impedance, current rating, and physical dimensions before substitution. No other direct substitute part numbers are confirmed in available public documentation.