BLM18BB220SN1D

Chip Ferrite Bead Overview

The Murata BLM18BB220SN1D is a surface-mount chip ferrite bead from the EMIFIL BLM18BB series, designed for high-speed signal line noise suppression. It features an impedance of 22 Ω at 100 MHz and supports a rated current of 500 mA. The component has a maximum DC resistance of 250 mΩ and operates within a temperature range of -55°C to +125°C. Housed in a compact 0603 (1608 metric) package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height, it complies with RoHS and REACH standards.

Chip Ferrite Bead Feature Summary

• Provides effective attenuation of high-frequency electromagnetic interference in sensitive circuitry
• Utilizes monolithic ferrite material for stable performance across wide temperature variations
• Offers low DC resistance to minimize signal loss in power or data lines

Chip Ferrite Bead Applications

• EMI suppression filters for high-speed digital interfaces
• Noise filtering on clock lines and data buses
• Power supply input filtering for portable electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against the manufacturer's official datasheet to confirm impedance tolerance and termination specifications. Ensure the ordering part number matches the required impedance value of 22 ohms at 100 MHz. Confirm compliance requirements such as RoHS status directly with the supplier documentation before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for space-constrained designs handling up to 500 mA. The 22 ohm impedance is suitable for moderate noise suppression needs compared to higher impedance variants. Consider the 250 mΩ DC resistance impact on voltage drop if used in low-voltage power distribution paths.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18BB series, which specializes in single-line ferrite beads for general-purpose noise suppression. The series is widely used in consumer electronics and industrial equipment where reliable EMI reduction is critical without introducing significant signal degradation.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM18BB series parts with identical impedance ratings, such as BLM18BB100SN1D for lower impedance or BLM18BB470SN1D for higher attenuation, provided current ratings are sufficient.