BLM31KN601SN1K

Chip Ferrite Bead Overview

The Murata BLM31KN601SN1K is a single-channel power line ferrite bead in a 1206 (3216 metric) surface-mount package. It provides an impedance of 600 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum rated DC current of 2.9 A and exhibits a maximum DC resistance of 38 mOhms. It operates within a temperature range of -55°C to +125°C, with physical dimensions of 3.2 mm length, 1.6 mm width, and a maximum height of 1.80 mm.

Chip Ferrite Bead Feature Summary

• Designed for high-current power line noise suppression applications
• Provides significant impedance attenuation at 100 MHz
• Low DC resistance minimizes voltage drop in power circuits

Chip Ferrite Bead Applications

• AI server power distribution networks
• High-speed digital circuit power filtering
• General-purpose EMI suppression on power lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm availability status and packaging configuration. The 'K' suffix may indicate a specific tape and reel quantity or variant distinct from the 'L' version. Confirm RoHS compliance and moisture sensitivity level requirements prior to integration into the supply chain.

Chip Ferrite Bead Selection Notes

Select this component when high current handling capability near 3A is required alongside substantial high-frequency noise attenuation. Ensure the PCB footprint accommodates the 1206 package dimensions and that the thermal environment remains within the specified -55°C to +125°C operational range for reliable performance.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which Murata identifies as high-rated current SMD ferrite beads specifically targeted for AI servers and demanding power applications. It shares the 1206 form factor with other BLM31 variants but distinguishes itself through its 2.9A current rating and 600 Ohm impedance profile.

Chip Ferrite Bead Replacement Considerations

Publicly documented parameter-equivalent substitutes include the Abracon AFBC-SH1206P-601T and the TAI-TECH HFZ 3216PF-601T29. Both offer matching 600 Ohm impedance at 100 MHz, 2.9A rated current, and 38 mOhm DCR in the same 1206 package.