BLM21SP102SZ1D

Chip Ferrite Bead Overview

The Murata BLM21SP102SZ1D is a single-channel chip ferrite bead in the BLM21_Z series, housed in an unshielded 0805 (2012 metric) SMD package. It provides 1 kOhms impedance at a test frequency of 100 MHz with a 25% tolerance. The component supports a maximum DC current of 1.2 A and has a maximum DC resistance of 222 mOhms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for power lines in compact surface-mount assemblies
• Automotive-grade reliability certified under AEC-Q200 standards
• Unshielded design suitable for general EMI filtering applications

Chip Ferrite Bead Applications

• Power line noise suppression in automotive electronics
• EMI filtering in compact electronic assemblies
• Signal integrity management in mobile devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit. Cross-reference the AEC-Q200 certification status if the application demands strict automotive compliance. Confirm RoHS compliance details directly from the manufacturer's datasheet before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 1 kOhm impedance at 100 MHz is required for high-frequency noise attenuation. The 1.2 A current rating makes it suitable for moderate-power signal lines or low-current power rails. The 0805 footprint allows for standard surface-mount placement. Consider the unshielded nature of the device when designing layouts sensitive to magnetic field interaction with nearby components.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21 series of ferrite beads, designed for suppressing electromagnetic interference in digital circuits. The series offers various impedance values and current ratings within the 0805 package. The BLM21SP102SZ1D specifically targets applications requiring significant high-frequency attenuation while maintaining low DC resistance to minimize voltage drop across the filtered line.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.