BLM18KG102WH1D

Chip Ferrite Bead Overview

The Murata BLM18KG102WH1D is a single ferrite chip bead in the BLM18KG series, designed for high-current power line filtering. It features an impedance of 1 kOhm at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 800 mA and has a maximum DC resistance of 230 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height, conforming to the EIA 0603 (1608 metric) package standard.

Chip Ferrite Bead Feature Summary

• Designed to function nearly as a resistor at noise frequencies to reduce resonance possibilities and leave signal waveforms undistorted
• External electrode nickel barrier structure provides excellent soldering heat resistance
• Suitable for circuits without stable ground connections as no grounding is required

Chip Ferrite Bead Applications

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

Chip Ferrite Bead Procurement Notes

Verify the specific suffix WH1D against official Murata documentation to confirm exact impedance and current ratings, as suffixes define electrical characteristics. Ensure the ordering part number matches the required 1 kOhm impedance and 800 mA rating. Confirm RoHS compliance status through the manufacturer's datasheet or certification documents before procurement.

Chip Ferrite Bead Selection Notes

Select this component when low DC resistance is critical to minimize power loss and extend battery life in portable products. The BLM18KG series offers higher rated current handling compared to conventional 0603 size power ferrite beads. It serves as a cost-effective alternative to larger 0805 and 1206 wire-wound beads while maintaining effective noise suppression in tight spaces.

Chip Ferrite Bead Part Context

This component belongs to the BLM18KG series of high-current power ferrite beads developed by Murata Electronics. The series is engineered to provide excellent noise suppression and low DC resistance specifically for power supply applications. It allows for significant miniaturization in electronic designs while managing currents significantly higher than standard ferrite chips of the same footprint.

Chip Ferrite Bead Replacement Considerations

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