BLM21BD221SN1D

Chip Ferrite Bead Overview

The Murata BLM21BD221SN1D is a single-line ferrite bead chip designed for signal line noise suppression. It features an impedance of 220 Ohms at 100 MHz and operates within a temperature range of -55°C to 125°C. The component utilizes a 0805 (2012 Metric) surface mount package with dimensions of 2.00mm length, 1.25mm width, and a maximum height of 1.45mm. It supports a rated current of 350mA and has a maximum DC resistance of 250 milliohms.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for sensitive signal lines
• Supports standard surface mount assembly processes
• Maintains stable electrical characteristics across wide industrial temperature ranges

Chip Ferrite Bead Applications

• High-speed signal line filtering
• EMI suppression filters
• Audio line noise reduction

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm impedance tolerance and packaging configuration. Ensure the procurement source provides valid RoHS3 compliance certificates. Cross-reference the manufacturer part number with authorized distributor databases to prevent counterfeit components. Confirm that the delivered lot matches the specified 0805 package dimensions and material composition.

Chip Ferrite Bead Selection Notes

Select this component when signal integrity requires moderate impedance at 100 MHz with limited current capacity. The 0805 footprint offers a balance between noise performance and board space efficiency. Consider the 350mA rating to ensure the component does not saturate under normal operating conditions. Verify compatibility with existing thermal management strategies given the low power dissipation profile.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM21 series, which focuses on compact ferrite beads for consumer and industrial electronics. The BD variant typically denotes specific impedance characteristics within the broader family. It serves as a passive filter element in modern printed circuit boards where space constraints limit the use of larger inductive components.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other Murata BLM21BD series parts with identical impedance ratings. Alternative manufacturers may offer comparable 0805 ferrite beads, but pin compatibility and impedance curves must be verified against original design specifications.