BLM18HG471SZ1D

Chip Ferrite Bead Overview

The Murata BLM18HG471SZ1D is a single-line ferrite chip bead in a 0603 (1608 metric) surface-mount package. It provides an impedance of 470 Ohms 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 850 mOhms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high noise suppression performance for sensitive signal lines
• Automotive-grade reliability certified under AEC-Q200 standards
• Compact 0603 footprint suitable for space-constrained PCB layouts

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI suppression
• Noise filtering for audio line circuits
• Signal integrity protection in digital interfaces

Chip Ferrite Bead Procurement Notes

Verify the suffix 'SZ1D' against official Murata documentation to confirm specific packaging or material variations, as ordering codes can dictate handling requirements. Ensure compatibility with existing supply chain channels for automotive-qualified components. Cross-reference the full part number with manufacturer datasheets to validate availability and lead times before finalizing procurement plans.

Chip Ferrite Bead Selection Notes

Select this component when designing for automotive environments requiring robust EMI filtering with limited current capacity. The 200 mA rating distinguishes it from higher-current variants like the BLM18KG series. Consider the 850 mOhms DC resistance impact on signal attenuation. The AEC-Q200 certification makes it suitable for safety-critical applications where standard industrial parts are insufficient.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18H series, designed specifically for automotive electronics. The series offers various impedance values in a standardized 0603 package. The HG variant typically denotes specific magnetic properties optimized for high-frequency noise absorption. It complements other BLM18 models by providing a balance between size, current handling, and attenuation performance.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include BLM18HG471SH1D and BLM18HG471SN1D, which share identical electrical specifications. Verify that alternative suffixes match the required packaging format and automotive qualification status before substitution.