BLM18BB331SZ1D

Chip Ferrite Bead Overview

The Murata BLM18BB331SZ1D is a single-line ferrite chip bead in the EMIFIL BLM18 series. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.6 mm length, 0.8 mm width, and 0.95 mm maximum height. The component provides an impedance of 330 Ohms at a test frequency of 100 MHz with a 25% tolerance. It supports a maximum DC current of 400 mA and has a maximum DC resistance of 580 milliohms. The operating temperature range spans from -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for signal lines within compact surface-mount footprints
• Engineered for stable electromagnetic interference filtering across wide industrial temperature ranges
• Designed for direct integration into printed circuit boards using standard SMD/SMT assembly processes

Chip Ferrite Bead Applications

• Noise filtering for high-speed digital signal lines
• Electromagnetic interference suppression in portable electronic devices
• Signal integrity management in automotive infotainment systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required impedance characteristics and current ratings for the target application circuit. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and traceability before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when space constraints require a 0603 footprint while maintaining significant noise attenuation capabilities. Evaluate the 400 mA current rating to ensure it exceeds the maximum expected load current without saturation. Confirm that the 330 Ohm impedance value aligns with the target noise frequencies identified during circuit simulation and design phase requirements.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series, which offers various ferrite bead options in the 0603 package size. The series is designed to address diverse noise suppression needs across consumer, industrial, and automotive electronics. The BLM18BB331SZ1D specifically targets applications requiring moderate current handling with high impedance performance in a standardized surface-mount form factor.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.