BLM18BD471SN1D

Chip Ferrite Bead Overview

The Murata BLM18BD471SN1D is a single-line chip ferrite bead in the EMIFIL BLM18 series, housed in a 0603 (1.6mm x 0.8mm) surface-mount 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 200mA and features a maximum DC resistance of 550 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for digital signal lines
• Compact 0603 footprint suitable for space-constrained PCB layouts
• Designed for EMI filtering applications in portable electronics

Chip Ferrite Bead Applications

• EMI suppression filters for digital interfaces
• Noise filtering for clock signals
• Power line decoupling in mobile devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against the official Murata datasheet to confirm impedance characteristics and packaging details. Ensure compatibility with RoHS and REACH regulations as specified in the manufacturer's documentation before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 470 Ohm impedance at 100 MHz is required for signal integrity. The 200mA current rating limits its use to low-power signal lines rather than power distribution networks. Consider the 550 mOhms DCR impact on signal attenuation during circuit design.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18 series of chip ferrite beads, designed for general-purpose EMI suppression. The BLM18BD variant specifically denotes the 0603 size code within the family, offering a balance between noise performance and physical footprint for consumer electronics.

Chip Ferrite Bead Replacement Considerations

Check Murata's official substitution guide for equivalent parts within the BLM18 series. Verify that alternative components match the 470 Ohm impedance and 200mA current rating to ensure functional parity.