BLM21SP331SN1D

Chip Ferrite Bead Overview

The Murata BLM21SP331SN1D is a single-line ferrite chip bead in the EMIFIL BLM21SP 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 milliohms. It operates within a temperature range of -55°C to +150°C. Physical dimensions are 2 mm in length, 1.25 mm in width, and 0.85 mm in height.

Chip Ferrite Bead Feature Summary

• High current handling capability up to 2.8 A for power line applications
• Compact 0805 footprint suitable for space-constrained designs
• Wide operating temperature range extending to +150°C

Chip Ferrite Bead Applications

• Power supply noise suppression
• EMI suppression filters
• Signal integrity protection in high-current circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm tape-and-reel packaging and lead finish specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when high DC current capacity is required alongside significant impedance at 100 MHz. The 0805 package offers a balance between current handling and board space efficiency. Verify that the thermal environment remains within the specified -55°C to +150°C operational limits during system integration.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21SP series, designed for high-current applications. It utilizes ferrite material to attenuate electromagnetic interference while maintaining low DC resistance. The series is engineered for reliability in demanding electronic environments requiring robust noise suppression on power lines.

Chip Ferrite Bead Replacement Considerations

Cross-reference with other BLM21SP variants for different impedance values or current ratings. Verify pin compatibility and physical dimensions when substituting with components from other manufacturers offering similar 0805 ferrite beads.