BLM21SP331SZ1D

Chip Ferrite Bead Overview

The Murata BLM21SP331SZ1D is a chip ferrite bead in the BLM21_H series, housed in an 0805 (2012 metric) surface-mount package. It provides an impedance of 330 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 2.8 A and has a maximum DC resistance of 40 mOhms. It operates within a temperature range of -55°C to +150°C. The device is unshielded and weighs approximately 10 mg.

Chip Ferrite Bead Feature Summary

• Designed for high-current power line applications with a 2.8 A rating
• Optimized for EMI suppression in compact 0805 footprints
• Capable of operating at elevated temperatures up to 150°C

Chip Ferrite Bead Applications

• Power supply filtering
• EMI suppression filters
• Automotive infotainment systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging configuration and material compliance. Ensure the selected variant matches the required thermal performance and current handling capabilities for the target circuit design before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when high current capacity is required alongside significant impedance at 100 MHz. The 0805 package offers a balance between size and power handling. Consider the 150°C maximum operating temperature for environments exceeding standard industrial limits.

Chip Ferrite Bead Part Context

This part belongs to the BLM21_H series, which focuses on high-current performance compared to other BLM21 variants. It serves as a passive component for noise reduction in electronic circuits, specifically targeting power integrity issues in modern automotive and consumer electronics.

Chip Ferrite Bead Replacement Considerations

BLM21PG331SN1D offers similar impedance but lower current handling. BLM21AG331SZ1D provides comparable characteristics with different thermal ratings. Verify pin compatibility and impedance curves before substitution.