BLM31KN471SZ1L

Chip Ferrite Bead Overview

The Murata BLM31KN471SZ1L is a single-line ferrite bead designed for power line noise suppression in the 1206 (3216 metric) surface-mount package. It exhibits an impedance of 470 Ohms at 100 MHz and supports a maximum rated current of 4 Amperes. The component features a low DC resistance of 20 milliohms maximum, ensuring minimal voltage drop during operation. Certified to AEC-Q200 standards, it operates reliably within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• High current handling capability up to 4 Amperes
• Low DC resistance minimizes power loss in power lines
• Single-line configuration for efficient space utilization

Chip Ferrite Bead Applications

• Noise filtering in AI server power distribution networks
• Electromagnetic interference suppression in automotive electronics
• Power line conditioning for high-current digital circuits

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and current ratings. Confirm RoHS3 compliance status as required by project specifications. Check moisture sensitivity level classifications for proper storage and handling procedures during assembly. Ensure compatibility with standard reflow soldering profiles for 1206 packages.

Chip Ferrite Bead Selection Notes

Select this component when high current capacity is required alongside significant noise attenuation at 100 MHz. The 1206 footprint offers a balance between current handling and board space efficiency. Consider the low DC resistance for applications where voltage integrity is critical. Verify thermal performance under continuous load conditions within the specified operating temperature range.

Chip Ferrite Bead Part Context

This component belongs to the BLM31KN series, which specializes in high-rated current SMD ferrite beads. The series is specifically engineered for demanding applications such as AI servers and automotive systems. It provides robust electromagnetic interference suppression while maintaining signal integrity in power delivery networks.

Chip Ferrite Bead Replacement Considerations

Consult official Murata documentation for verified substitute part numbers within the BLM31KN series or compatible families. Ensure any replacement matches the 1206 package dimensions, 4A current rating, and 470 Ohm impedance specification.