BLM21AG331BH1D

Chip Ferrite Bead Overview

The Murata BLM21AG331BH1D is a single-line ferrite bead in the EMIFIL BLM21 series, housed in an 0805 (2012 metric) surface-mount package. It provides 330 Ohms impedance at 100 MHz with a maximum DC resistance of 150 mOhms and supports a rated current of 800 mA. The component operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise suppression for digital signal lines
• Features low DC resistance to minimize power loss in high-current applications
• Automotive-grade reliability certified under AEC-Q200 standards

Chip Ferrite Bead Applications

• Noise filtering on USB data lines
• EMI suppression for clock signals
• Power line filtering in automotive electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1D against official Murata documentation to confirm impedance tolerance and packaging details. Ensure the procurement channel sources genuine components from authorized distributors to guarantee compliance with AEC-Q200 automotive standards and prevent counterfeit parts.

Chip Ferrite Bead Selection Notes

Select this component when a 330 Ohm impedance at 100 MHz is required for a single signal line. The 800 mA current rating suits moderate-power digital interfaces. Verify that the 0805 footprint fits the PCB layout and that the operating temperature range covers the intended environment.

Chip Ferrite Bead Part Context

This part belongs to the BLM21 family of chip ferrite beads designed for EMI suppression. The AG designation typically indicates specific material characteristics optimized for broadband noise absorption. It serves as a passive component to attenuate electromagnetic interference without affecting the desired signal integrity.

Chip Ferrite Bead Replacement Considerations

Check Murata's official cross-reference lists for direct substitutes. Alternative ferrite beads must match the 0805 footprint, 330 Ohm impedance, and 800 mA current rating to ensure electrical compatibility.