BLM18KG101TH1D

Chip Ferrite Bead Overview

The Murata BLM18KG101TH1D is a single-line chip ferrite bead in the EMIFIL BLM18KG series, designed for high-current power line filtering. It features an impedance of 100 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 3 A and maintains a maximum DC resistance of 30 mOhms. Housed in a compact 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm, it operates within a temperature range of -55°C to +125°C. The device is qualified under AEC-Q200 standards.

Chip Ferrite Bead Feature Summary

• Provides excellent noise suppression with low DC resistance for efficient power supply applications
• Capable of managing high DC currents up to 3 A in a standard 0603 footprint
• Offers extended reliability through AEC-Q200 automotive qualification

Chip Ferrite Bead Applications

• DC power line filtering for portable mobile equipment
• Noise suppression in cellular phones and personal digital assistants
• Power conditioning for notebook PCs and audio systems
• Filtering in hard disk drive circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TH1D against official datasheets to confirm physical dimensions and termination specifications, as variations exist within the BLM18KG family. Ensure compatibility with AEC-Q200 requirements if deploying in automotive contexts. Cross-reference impedance values at 100 MHz to validate circuit performance targets before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when space constraints require a 0603 package but higher current handling than standard beads allows. The low DC resistance minimizes power loss and heat generation compared to conventional ferrite chips. Consider the 3 A rating relative to peak load currents to prevent saturation. Verify that the 100 Ohm impedance profile aligns with the target noise frequencies in the specific power rail design.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18KG series, which introduces high-current capabilities to the standard 0603 size. The series is engineered to replace larger 0805 or 1206 components while offering approximately 50% lower DC resistance. This reduction in resistance extends battery life in portable devices by minimizing power consumption during operation.

Chip Ferrite Bead Replacement Considerations

BLM18KG101TN1D: Identical electrical parameters including 100 Ohm impedance and 3 A rating; verify height differences (0.75mm vs 0.8mm). BLM18KG101TZ1D: Same impedance and current rating; confirm package height is 0.6mm for board clearance compatibility.