BLM31KN271SH1L

Chip Ferrite Bead Overview

The Murata BLM31KN271SH1L is a single-line ferrite chip bead in the 1206 (3216 metric) surface-mount package. It provides an impedance of 270 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 4.5 Amperes and features a maximum DC resistance of 16 milliohms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 automotive qualification.

Chip Ferrite Bead Feature Summary

• Automotive-grade reliability certified under AEC-Q200 standards for robust performance in vehicle environments
• High current handling capability suitable for power line noise suppression applications
• Compact 1206 surface-mount footprint designed for efficient PCB space utilization

Chip Ferrite Bead Applications

• Power supply line filtering in automotive electronic systems
• Noise suppression for high-current digital circuits
• EMI reduction in automotive infotainment and control modules

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required impedance and current ratings for the target circuit design. Cross-reference datasheets to validate compatibility with automated assembly processes and environmental operating conditions.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring high current capacity alongside effective high-frequency noise attenuation. The 1206 package offers a balance between current handling and board space. Verify that the 4.5A rating exceeds the peak operational current of the protected line to prevent saturation or thermal issues during normal operation.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which Murata markets specifically for high-rated current applications such as AI servers and automotive electronics. The series utilizes specialized materials to maintain low DC resistance while providing significant impedance at high frequencies, distinguishing it from standard general-purpose ferrite beads.

Chip Ferrite Bead Replacement Considerations

BLM31KN271SZ1L is a documented parameter-equivalent alternative within the same series.