BLM21BB221SZ1D

Chip Ferrite Bead Overview

The Murata BLM21BB221SZ1D is a single-line chip ferrite bead in the BLM21_Z series, housed in an unshielded 0805 (2012 metric) surface-mount package. It provides an impedance of 220 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 500 mA and exhibits a maximum DC resistance of 260 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for high-speed signal lines
• Designed for effective electromagnetic interference filtering
• Constructed as an unshielded chip ferrite bead

Chip Ferrite Bead Applications

• High-speed signal line noise suppression
• EMI suppression filters
• General-purpose circuit filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm exact packaging and tape specifications. Ensure the selected variant matches the required AEC-Q200 automotive qualification status if applicable to the target design. Cross-reference the impedance value and current rating with the final schematic requirements before procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for noise suppression on lines carrying up to 500 mA. The 220 Ohm impedance at 100 MHz targets specific high-frequency noise profiles. Consider the low DC resistance to minimize voltage drop in power or data lines. Verify thermal performance within the specified operating temperature range for the intended environment.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21 series of chip ferrite beads, which are widely used for EMI suppression in electronic circuits. The BLM21BB221SZ1D specifically utilizes the 0805 case size, offering a balance between physical footprint and electrical performance for surface-mount assembly processes.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified equivalents. Generic replacements may differ in impedance characteristics or current handling capabilities.