BLM18SG331TN1D

Chip Ferrite Bead Overview

The BLM18SG331TN1D is a single-line ferrite bead chip manufactured by Murata Electronics. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height. The component provides an impedance of 330 Ohms at a test frequency of 100 MHz with a tolerance of 25%. It supports a maximum DC current rating of 1.5 A and has a maximum DC resistance of 70 mOhms. The operating temperature range spans from -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for power supply lines in electronic circuits.
• Designed for surface-mount assembly using standard SMD/SMT termination types.
• Capable of handling high DC currents while maintaining low DC resistance.

Chip Ferrite Bead Applications

• Power supply line filtering
• Battery charger circuits
• Portable electronic devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TN1D against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for power rail noise attenuation. The 1.5 A current rating distinguishes it from lower-current variants in the BLM18 series. Confirm that the 330 Ohm impedance at 100 MHz aligns with the targeted noise frequency spectrum.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18 series of ferrite beads. The series offers various impedance values and current ratings within the compact 0603 package format. The SG suffix typically denotes specific material characteristics optimized for power line applications compared to signal line variants.

Chip Ferrite Bead Replacement Considerations

Check Murata's official substitution lists for equivalent impedance and current ratings. Verify physical compatibility with the existing 0603 footprint before replacing.