BLM31SN500BH1L

Chip Ferrite Bead Overview

The Murata BLM31SN500BH1L is a single-line ferrite bead in a 1206 (3216 metric) surface-mount package. It provides an impedance of 50 ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 12 A and has a maximum DC resistance of 1.6 milliohms. It operates within a temperature range of -55°C to +125°C and meets the AEC-Q200 automotive qualification standard.

Chip Ferrite Bead Feature Summary

• Automotive-grade reliability certified under AEC-Q200 standards
• High-current handling capability suitable for power line filtering
• Nickel barrier electrode structure ensures excellent soldering thermal resistance

Chip Ferrite Bead Applications

• Power supply noise suppression in automotive electronic systems
• EMI filtering on high-current DC lines
• Signal integrity protection in automotive infotainment and control units

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1L against official Murata documentation to confirm the exact termination and packaging configuration, as ordering suffixes define physical attributes. Ensure the procurement source provides valid RoHS compliance data and confirms the component matches the AEC-Q200 qualification requirements specified for this part number.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring high current capacity up to 12 A alongside effective high-frequency noise attenuation. The 1206 footprint offers a balance between current handling and board space. Consider the low DC resistance to minimize voltage drop and power loss in sensitive power distribution networks.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM31 series of multi-layer ferrite beads designed for general use and automotive applications. The series utilizes a unique internal structure to provide stable impedance characteristics while maintaining low DC resistance, making it suitable for suppressing electromagnetic interference in compact electronic designs.

Chip Ferrite Bead Replacement Considerations

Consult the official Murata Alternate Sizing Guide for verified cross-references. Substitution requires matching the 1206 footprint, 50-ohm impedance at 100 MHz, 12 A current rating, and AEC-Q200 automotive qualification status.