BLM31KN271SZ1L

Chip Ferrite Bead Overview

The Murata BLM31KN271SZ1L is a single-channel surface-mount ferrite chip bead designed for high-current applications. It features an impedance of 270 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 4.5 Amperes. The component has a maximum DC resistance of 16 mOhms and operates within a temperature range of -55°C to +125°C. It utilizes a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and a maximum height of 1.80 mm. The device meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• High rated current capability suitable for power line filtering
• Automotive grade reliability certified under AEC-Q200 standards
• Compact 1206 surface mount footprint for space-constrained designs

Chip Ferrite Bead Applications

• Power supply noise suppression in automotive electronics
• EMI filtering for AI server power distribution networks
• Signal integrity protection on high-current data lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix codes against official Murata documentation to ensure correct impedance and tolerance specifications. Confirm that the requested variant matches the required AEC-Q200 automotive qualification status. Check for RoHS compliance details relevant to your region. Ensure the ordering quantity aligns with standard reel or cut tape packaging options provided by authorized distributors.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current handling alongside effective high-frequency noise attenuation. The low DC resistance minimizes voltage drop and power loss in the signal path. Consider the physical dimensions of the 1206 package to ensure compatibility with existing PCB footprints and assembly equipment capabilities.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series of high-rated current SMD ferrite beads manufactured by Murata Electronics. The series is specifically engineered for demanding environments, including automotive systems and AI servers. These components provide robust electromagnetic interference suppression while maintaining structural integrity under high thermal and electrical stress conditions.

Chip Ferrite Bead Replacement Considerations

BLM31KN271SH1L is documented as a parameter-equivalent alternative.