BLM18KG300TH1D

Chip Ferrite Bead Overview

The Murata Electronics BLM18KG300TH1D is a single-line ferrite chip bead in the EMIFIL BLM18 series, designed for high-current power line filtering. It features an impedance of 30 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 5 A and has a maximum DC resistance of 10 mOhms. It operates within a temperature range of -55°C to +125°C. The device utilizes a 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm.

Chip Ferrite Bead Feature Summary

• Provides excellent noise suppression for power supply applications
• Features low DC resistance to reduce power consumption
• Capable of handling high DC currents up to 6 amps
• Offers a wide operating temperature range from -55°C to +125°C

Chip Ferrite Bead Applications

• DC power line filtering for compact mobile equipment
• Noise suppression in portable navigation devices
• Filtering in cellular phones and personal digital assistants
• Power line protection in notebook PCs and audio systems
• Noise control in hard disk drives

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TH1D against official Murata documentation to confirm packaging details and any automotive qualification status. Ensure the selected variant matches the required impedance and current ratings for the target power line application. Cross-reference the part number with the manufacturer's latest datasheet to confirm RoHS compliance and moisture sensitivity levels before procurement.

Chip Ferrite Bead Selection Notes

Select this component when space-constrained designs require high-current handling in a standard 0603 footprint. The low DC resistance minimizes voltage drop and heat generation in power lines. Compare performance against larger 0805 or 1206 beads to optimize board area while maintaining equivalent noise suppression capabilities for portable electronic devices.

Chip Ferrite Bead Part Context

This component belongs to the BLM18KG series, which represents a new generation of high-current power ferrite beads developed by Murata. The series is engineered to manage significantly higher rated currents compared to conventional 0603 size power ferrite beads. It offers a cost-effective alternative to larger wire-wound beads while providing superior noise suppression characteristics for modern compact electronics.

Chip Ferrite Bead Replacement Considerations

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