BLM18BA470SN1D

Chip Ferrite Bead Overview

The Murata BLM18BA470SN1D is a single-line chip ferrite bead from the EMIFIL BLM18 series, designed for high-speed signal line noise suppression. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.60mm x 0.80mm and a maximum height of 0.95mm. The component provides an impedance of 47 Ohms at 100 MHz and supports a rated current of 300mA. Its maximum DC resistance is 550 milliohms. It operates within a temperature range of -55°C to 125°C and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Engineered for suppressing high-frequency noise in high-speed signal lines
• Utilizes EMIFIL technology for effective EMI filtering
• Designed for compact surface-mount integration

Chip Ferrite Bead Applications

• High-speed signal line noise suppression
• EMI suppression filters
• Digital interface circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against the manufacturer's official datasheet to confirm impedance tolerance and packaging configuration. Ensure the procurement source provides valid traceability documentation. Confirm that the delivered components match the specified 0603 footprint and electrical ratings to prevent integration errors in high-speed designs.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring noise attenuation on single signal lines with currents up to 300mA. The 47 Ohm impedance at 100 MHz targets specific frequency ranges. Consider the low DC resistance to minimize voltage drop. Verify thermal management requirements given the 125°C maximum operating temperature limit.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18 series, which offers various impedance values and current ratings in a standardized 0603 footprint. The BA suffix typically denotes specific material characteristics optimized for general high-speed applications. It serves as a passive filter solution within broader EMI mitigation strategies for consumer and industrial electronics.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM18 series parts with identical 47 Ohm impedance and 300mA rating, such as BLM18BA470SH1D. Cross-series replacements require verifying impedance curves and current handling capabilities to ensure equivalent noise suppression performance.