BLM31KN271SH1K

Chip Ferrite Bead Overview

The Murata BLM31KN271SH1K is a single-line chip ferrite bead in the BLM series, designed for noise suppression. It features a 1206 (3216 metric) surface-mount package with dimensions of 3.20mm length, 1.60mm width, and 1.80mm maximum height. The component provides an impedance of 270 Ohms at a test frequency of 100 MHz. It supports a maximum DC current rating of 4.5A and has a maximum DC resistance of 16 mOhms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Functions as a resistor-like element for effective noise filtering
• Designed specifically for high-rated current applications
• Suitable for power line noise suppression

Chip Ferrite Bead Applications

• AI Servers
• Automotive electronics
• Power line filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'K' against official Murata documentation to confirm packaging details, as standard listings often reference the 'L' variant. Ensure the selected part matches the required 1206 footprint and 4.5A current rating for the target circuit design.

Chip Ferrite Bead Selection Notes

Select this component when high current handling up to 4.5A is required alongside significant noise attenuation. The low DC resistance minimizes voltage drop, while the 270 Ohm impedance targets specific frequency bands. Verify thermal management capabilities within the -55°C to +125°C operating range.

Chip Ferrite Bead Part Context

This component belongs to the BLM31KN series, which Murata identifies as high-rated current SMD ferrite beads. The series is engineered for demanding environments, including automotive and AI server applications, offering robust performance in compact 1206 packages.

Chip Ferrite Bead Replacement Considerations

BLM31KN271SH1L is a confirmed substitute with identical electrical characteristics but potentially different packaging.