BLM21RK221SN1D

Chip Ferrite Bead Overview

The Murata BLM21RK221SN1D is a single-line ferrite bead chip in an 0805 (2012 metric) surface-mount package. It provides an impedance of 220 ohms at 100 MHz with a maximum DC resistance of 200 milliohms and a rated current of 200 mA. The component operates within a temperature range of -55°C to +125°C, measures 2.00 mm by 1.25 mm by 1.05 mm, and belongs to the EMIFIL BLM21 series.

Chip Ferrite Bead Feature Summary

• Provides high impedance for effective noise suppression in electronic circuits
• Low DC resistance minimizes power loss in signal paths
• Compact 0805 footprint suitable for space-constrained designs

Chip Ferrite Bead Applications

• Noise filtering for general-purpose signal lines
• EMI suppression in portable electronic devices
• Power line filtering for low-current applications

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes against official Murata documentation to ensure correct impedance and tolerance specifications. Confirm RoHS3 compliance status and moisture sensitivity level requirements prior to procurement. Check for specific packaging options such as cut tape or reel quantities if required for assembly processes.

Chip Ferrite Bead Selection Notes

Select this component when a 220-ohm impedance at 100 MHz is required for a single-line application. Ensure the circuit current does not exceed the 200 mA rating to prevent performance degradation. Consider the 0805 package size for compatibility with existing PCB footprints and manufacturing equipment.

Chip Ferrite Bead Part Context

This component is part of the Murata EMIFIL BLM21 series of ferrite beads. The series offers various impedance values and current ratings in standard packages. The BLM21RK variant specifically targets general noise suppression needs with defined electrical characteristics for reliable EMI control.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified alternatives. Cross-reference impedance curves and current ratings carefully when considering other manufacturers' components.