BLM21AG331SN1D

Chip Ferrite Bead Overview

The Murata BLM21AG331SN1D is a single-line chip ferrite bead in the EMIFIL BLM21 series, housed in a 0805 (2012 metric) surface-mount package. It provides an impedance of 330 Ohms at 100 MHz with a maximum DC resistance of 160 milliohms and a rated current of 700 mA. The component operates within a temperature range of -55°C to 125°C and measures 2.00 mm x 1.25 mm x 1.05 mm.

Chip Ferrite Bead Feature Summary

• Suppresses high-frequency electromagnetic interference in compact circuits
• Provides stable noise filtering across wide industrial temperature ranges
• Supports surface-mount assembly for automated manufacturing

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic equipment
• Noise filtering for audio lines
• Power supply line conditioning

Chip Ferrite Bead Procurement Notes

Verify the suffix SN1D against official Murata documentation to confirm the specific packaging configuration and tape-and-reel 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 a 330 Ohm impedance at 100 MHz is required for noise suppression in space-constrained designs. The 0805 footprint offers a balance between thermal performance and board area efficiency. Verify that the 700 mA current rating exceeds the maximum operating current of the protected line to prevent saturation or excessive heating.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21AG series of chip ferrite beads, designed for EMI suppression in portable and industrial electronics. The AG suffix typically denotes standard impedance characteristics within the broader BLM21 family, which includes variants optimized for different current handling and impedance profiles.

Chip Ferrite Bead Replacement Considerations

Cross-reference with other BLM21AG331 variants from Murata to ensure identical electrical parameters. Verify package dimensions and termination compatibility before substituting with components from other manufacturers.