BLM18RK102SN1D

Chip Ferrite Bead Overview

The Murata BLM18RK102SN1D is a single-channel ferrite chip bead in the BLM18RK series, housed in an EIA 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm. It provides an impedance of 1 kOhms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 800 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed for high-impedance noise suppression in low-current signal lines
• Monolithic construction eliminates the need for grounding connections
• Nickel barrier electrode structure ensures robust soldering heat resistance

Chip Ferrite Bead Applications

• High-speed signal line noise filtering
• EMI suppression filters
• Portable electronic devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm the exact termination plating and reel specifications. Ensure the selected variant matches the required 0603 footprint and 200 mA current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when the application requires significant attenuation at 100 MHz but operates with currents below 200 mA. The 800 mOhms DC resistance must be evaluated against the power budget of the signal line to prevent excessive voltage drop or self-heating issues during continuous operation.

Chip Ferrite Bead Part Context

This part belongs to the BLM18RK family of multi-layer ferrite beads. Unlike higher-current variants such as the BLM18SP, the RK series prioritizes high impedance characteristics over current handling capacity. It serves as a specialized solution for sensitive digital interfaces where noise immunity is critical but power consumption must remain minimal.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other Murata 0603 ferrite beads with similar 1 kOhm impedance and current ratings, such as BLM18AG102SN1D, provided the lower DC resistance and higher current rating of the AG series are acceptable for the specific application constraints.

Chip Ferrite Bead FAQ

Does the BLM18RK102SN1D require a ground connection?

No, the monolithic construction allows it to function effectively without a ground connection, making it suitable for circuits lacking stable ground planes.

What is the maximum operating temperature for this component?

The component is rated for a maximum operating temperature of +125°C.