BLM31KN271SZ1K

Chip Ferrite Bead Overview

The Murata BLM31KN271SZ1K is a single-channel ferrite chip bead designed for power line noise suppression. It features a 1206 (3216 metric) surface-mount package with dimensions of 3.2mm x 1.6mm x 1.80mm. The component provides an impedance of 270 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 4.5A. It exhibits a maximum DC resistance of 16 mOhms and operates within a temperature range of -55°C to +125°C. This part is AEC-Q200 qualified for automotive reliability.

Chip Ferrite Bead Feature Summary

• High rated current capability suitable for power line applications
• Automotive grade qualification ensuring reliability in harsh environments
• Compact 1206 surface-mount footprint for space-constrained designs

Chip Ferrite Bead Applications

• Power supply noise filtering in automotive electronics
• EMI suppression for high-current data lines
• Noise reduction in AI server power distribution networks

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation, as variations may exist between distributors. Confirm RoHS compliance status and moisture sensitivity level prior to procurement. Ensure the ordering code matches the required impedance and current ratings exactly. Cross-reference with authorized manufacturer channels to validate authenticity and avoid counterfeit components.

Chip Ferrite Bead Selection Notes

Select this component when high current handling is required alongside significant impedance at 100 MHz. The 16 mOhm DCR minimizes voltage drop in power paths. Consider the 1206 package size for standard SMT assembly processes. Verify thermal performance under continuous 4.5A load conditions to ensure operation remains within the specified temperature limits.

Chip Ferrite Bead Part Context

This component belongs to the BLM31KN series, which focuses on high-rated current applications. It is specifically engineered for automotive and industrial power systems where robust noise suppression is critical. The series utilizes advanced ferrite materials to maintain performance under high DC bias conditions.

Chip Ferrite Bead Replacement Considerations

BLM31KN271SH1L is documented as a parameter-equivalent alternative.