BLM18KN471EH1D

Chip Ferrite Bead Overview

The Murata BLM18KN471EH1D is a single-line chip ferrite bead in the BLM18KN series, designed for high-temperature power line noise suppression. It features an impedance of 470 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 920 mA and has a maximum DC resistance of 130 mOhms. It operates within a temperature range of -55°C to +175°C and meets AEC-Q200 automotive standards. The package is 0603 (1608 metric) SMD.

Chip Ferrite Bead Feature Summary

• High-temperature operation up to +175°C for demanding environments
• Automotive grade reliability certified to AEC-Q200 standards
• Resistive behavior at noise frequencies to minimize resonance risks

Chip Ferrite Bead Applications

• Noise suppression in automotive power lines
• High-temperature electronic circuit filtering
• Automotive-grade signal integrity management

Chip Ferrite Bead Procurement Notes

Verify the specific suffix EH1D against official Murata documentation to confirm the high-temperature rating and AEC-Q200 certification status. Ensure the ordering part number matches the required impedance and current specifications for the target application environment.

Chip Ferrite Bead Selection Notes

Select this component when applications require ferrite beads capable of withstanding temperatures up to +175°C. The 920 mA current rating makes it suitable for moderate power line filtering where standard components may fail due to thermal constraints or insufficient current handling.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18KN_EH series, which is specifically engineered for automotive applications requiring extended temperature ranges. Unlike standard BLM18KG or BLM18HD variants, the KN series utilizes materials optimized for stability at elevated temperatures while maintaining effective noise suppression characteristics.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM18KN series parts with matching 470 Ohm impedance and 0603 footprint. Verify that any replacement maintains the +175°C operating limit and AEC-Q200 qualification if automotive compliance is required.