BLM18EG331TH1D

Chip Ferrite Bead Overview

The Murata BLM18EG331TH1D is a single-line chip ferrite bead in the BLM18EG series, housed in a 0603 (1608 metric) surface-mount package. It provides an impedance of 330 Ω at 100 MHz and 450 Ω at 1 GHz. The component supports a maximum DC current of 0.5 A with a maximum DC resistance of 200 mΩ. Operating temperatures range from -55°C to +125°C. Physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height.

Chip Ferrite Bead Feature Summary

• Designed for suppressing high-frequency noise in power supply circuits across wide frequency ranges
• Utilizes low-inductance structure suitable for decoupling applications
• Complies with RoHS and REACH standards

Chip Ferrite Bead Applications

• High-frequency noise suppression in power supply circuits
• EMI filtering for general electronic equipment
• Decoupling applications requiring low inductance

Chip Ferrite Bead Procurement Notes

Verify the suffix 'H' against official datasheets to confirm the specific termination style and packaging configuration. Ensure the selected variant matches the required 0.5A current rating and 330 Ohm impedance specifications for the target application circuit.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for power line filtering. The 0.5A rating limits usage to lower current paths compared to higher-rated siblings. Verify that the 330 Ohm impedance at 100 MHz aligns with the noise spectrum of the signal or power line being filtered.

Chip Ferrite Bead Part Context

This part belongs to the BLM18EG series, which features low-inductance characteristics optimized for decoupling. The series offers various impedance and current ratings within the standard 0603 package, allowing designers to balance noise suppression performance with DC current handling capabilities in compact designs.

Chip Ferrite Bead Replacement Considerations

Check for BLM18EG331SN1D if a different termination or packaging option is needed. Verify current ratings carefully as other series members may support significantly higher currents.