BLM31KN102SN1K

Chip Ferrite Bead Overview

The Murata BLM31KN102SN1K 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 3.20mm x 1.60mm x 1.80mm maximum height. The component provides an impedance of 1 kOhms at a test frequency of 100 MHz. It supports a maximum DC current of 2A and has a maximum DC resistance of 75 mOhms. The device operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise attenuation for power lines in the RF spectrum
• Engineered for high-current applications with low DC resistance
• Automotive-grade reliability compliant with AEC-Q200 standards

Chip Ferrite Bead Applications

• Power supply filtering in automotive electronic systems
• Noise suppression for AI server power distribution networks
• EMI mitigation in high-current digital circuit power rails

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1K against official Murata documentation to confirm package type and availability status, as suffixes define critical physical and electrical attributes. Cross-reference the manufacturer part number with authorized distributor listings to ensure authenticity and traceability. Confirm RoHS compliance and moisture sensitivity level requirements prior to integration into the manufacturing process.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant noise reduction on power lines carrying up to 2A. The 1206 footprint allows for compact board layouts while handling substantial current without saturation. Ensure the target application operates within the specified -55°C to +125°C range and requires AEC-Q200 certification if used in automotive contexts.

Chip Ferrite Bead Part Context

This component belongs to the BLM31KN series, which specializes in high-rated current SMD ferrite beads. The series is specifically marketed for demanding applications such as AI servers and automotive electronics where robust noise suppression and high current handling are critical. It serves as a passive EMI filter element integrated directly into power traces.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative ferrite beads by matching impedance curves, current ratings, and package dimensions.