BLM21SP471BH1D

Chip Ferrite Bead Overview

The Murata BLM21SP471BH1D is a single-channel ferrite chip bead in the BLM21_H series, housed in an 0805 (2012 metric) SMD package. It exhibits an impedance of 470 Ohms at 100 MHz with a 25% tolerance and supports a maximum DC current of 2.8 A. The component features a low maximum DC resistance of 40 mOhms and operates within a temperature range of -55°C to +150°C. It is qualified under AEC-Q200 standards for automotive reliability.

Chip Ferrite Bead Feature Summary

• High-temperature stability up to 150°C
• Automotive-grade AEC-Q200 qualification
• Low DC resistance for minimal power loss

Chip Ferrite Bead Applications

• Power line noise suppression in automotive electronics
• EMI filtering in high-current circuits
• Signal integrity protection in automotive infotainment systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1D against official Murata documentation to confirm the exact termination plating and reel specifications. Ensure the selected variant meets the required thermal and current ratings for the target application environment. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

Chip Ferrite Bead Selection Notes

Select this component when high-temperature operation up to 150°C is required alongside significant current handling capabilities. The 0805 footprint offers a balance between current capacity and board space efficiency compared to smaller packages. Verify that the 470 Ohm impedance profile aligns with the specific frequency spectrum of the noise being suppressed in the circuit design.

Chip Ferrite Bead Part Context

This part belongs to the BLM21_H series, designed for robust performance in demanding environments. The series utilizes advanced ferrite materials to provide effective broadband noise absorption while maintaining structural integrity under thermal stress. It serves as a critical passive component for electromagnetic interference mitigation in modern electronic assemblies.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified equivalents. Generic ferrite beads may not match the specific high-temperature rating or AEC-Q200 qualification required for this application.