BLM31KN601BH1L

Chip Ferrite Bead Overview

The Murata Electronics BLM31KN601BH1L is a single-line ferrite chip bead designed for power supply noise suppression. It features a 1206 (3216 metric) surface-mount package with dimensions of 3.2 mm length, 1.6 mm width, and 1.1 mm height. The component provides an impedance of 600 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 2 A and has a maximum DC resistance of 38 mOhms. Operating temperatures range from -55°C to +125°C. The device meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Designed to function nearly as a resistor at noise frequencies for effective electromagnetic interference suppression
• Features a nickel barrier termination structure for enhanced reliability in high-current applications
• Qualified for automotive use under the AEC-Q200 standard

Chip Ferrite Bead Applications

• Power supply circuits requiring high rated current noise filtering
• Automotive electronic systems
• AI server power distribution networks

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'BH1L' against official Murata documentation to confirm termination and packaging specifications. Ensure the selected variant matches the required automotive grade and current rating for the target application. Cross-reference datasheet parameters such as impedance and DC resistance to validate compatibility with circuit design requirements before procurement.

Chip Ferrite Bead Selection Notes

Select this component when designing power lines that demand significant current handling capability alongside high-frequency noise attenuation. The 1206 footprint offers a balance between current capacity and board space efficiency. Consider the 600 Ohm impedance profile for targeting specific noise spectra around 100 MHz while maintaining low DC resistance to minimize voltage drop and power loss in the circuit path.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series of high-rated current SMD ferrite beads from Murata's EMIFIL product line. The series is specifically engineered for demanding environments, including AI servers and automotive electronics. It complements other variants in the BLM31 family by offering optimized performance for power rail protection where standard ferrite beads might saturate or overheat under heavy load conditions.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.