BLM18KG300JH1D

Chip Ferrite Bead Overview

The Murata BLM18KG300JH1D is a single-channel ferrite chip bead in the BLM18KG series, designed for high-current power line filtering. It features an EIA 0603 (1608 metric) surface-mount package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height. The component provides an impedance of 30 Ohms at a test frequency of 100 MHz with a tolerance of 25%. It supports a maximum DC current of 3.3 A and maintains a low maximum DC resistance of 10 mOhms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides excellent noise suppression for power supply applications through high current handling capabilities.
• Features low DC resistance to reduce power consumption and minimize heat generation during operation.
• Designed for compact mobile equipment with a small 0603 footprint suitable for automated SMT assembly.

Chip Ferrite Bead Applications

• DC power line filtering for portable navigation devices
• Noise suppression in cellular phones and personal digital assistants
• Power filtering for notebook PCs and audio systems
• EMI suppression in hard disk drive circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix JH1D against official Murata documentation to confirm the exact impedance tolerance and packaging configuration. Ensure the procurement channel sources genuine components from authorized distributors to guarantee compliance with RoHS standards and automotive qualification requirements where applicable.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant DC current capacity alongside effective high-frequency noise attenuation. The low DC resistance makes it suitable for battery-powered portable products where extending operational life is critical. Compare its current rating against conventional 0603 beads to ensure adequate margin for peak load conditions.

Chip Ferrite Bead Part Context

This part belongs to the BLM18KG series, which represents a new generation of high-current power ferrite beads developed by Murata Electronics. The series offers improved performance compared to conventional 0603 size power ferrite beads, managing higher rated currents while maintaining a compact form factor that competes favorably with larger 0805 and 1206 packages.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative models by matching impedance values, current ratings, and physical dimensions before implementation.