BLM21BD471SH1D

Chip Ferrite Bead Overview

The BLM21BD471SH1D is a single-line ferrite chip bead from the Murata EMIFIL BLM21 series, designed for surface-mount applications in the 0805 (2012 metric) package. It provides an impedance of 470 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 200 mA and exhibits a maximum DC resistance of 400 mOhms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for single-line circuits at 100 MHz
• Qualified for automotive reliability under AEC-Q200 standards
• Designed for compact surface-mount integration in 0805 footprints

Chip Ferrite Bead Applications

• Automotive electronic circuit noise filtering
• DC power line signal conditioning
• General-purpose electromagnetic interference suppression

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SH1D against official Murata documentation to confirm package dimensions and termination specifications. Ensure compatibility with existing PCB land patterns for the 0805 footprint. Confirm that the 200 mA rated current aligns with the target circuit's operational requirements before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 470 Ohm impedance at 100 MHz is required for single-line noise attenuation. The 0805 package size suits space-constrained designs. Verify that the 200 mA current rating exceeds the maximum expected DC bias current to prevent performance degradation due to saturation effects.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21 series of ferrite beads, which are widely used for EMI suppression in electronic systems. The series offers various impedance values and current ratings within standardized packages to facilitate design flexibility across consumer and industrial applications.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other Murata parts with identical electrical parameters and package dimensions, such as BLM21BD471SN1D or BLM21BB471SZ1D, provided they meet the same AEC-Q200 and RoHS compliance requirements.