MLS0805-4S7-401

Overview

The Ferroxcube MLS0805-4S7-401 is a surface-mount multilayer ferrite bead designed for electromagnetic interference suppression. It features an 0805 [2012 Metric] case size with a nominal impedance of 400 ohms at 100 MHz and a tolerance of ±25%. The component has a maximum DC resistance of 0.3 ohms and supports a DC current rating of 300 mA. It operates within a temperature range up to a maximum of 125°C.

Feature Summary

• Multilayer construction for compact EMI suppression in high-density circuits
• High impedance characteristics effective against radio frequency noise
• Surface-mount design suitable for automated assembly processes

Applications

• Motherboard signal line filtering
• Notebook computer peripheral interfaces
• CD-ROM and DVD-ROM drive circuits
• Scanner data lines

Procurement Notes

Verify the specific impedance value and current rating against the official datasheet before procurement, as variations may exist between manufacturing batches or updated product revisions. Confirm that the 0805 package dimensions align with your PCB footprint requirements. Ensure the supplier provides documentation confirming compliance with RoHS standards if required by your manufacturing specifications.

Selection Notes

Select this component when space constraints necessitate an 0805 footprint while requiring significant attenuation at 100 MHz. The 300 mA current rating suits low-power digital signal lines rather than power distribution networks. Consider the 0.3 ohm DC resistance impact on voltage drop for sensitive logic circuits. Evaluate thermal performance under continuous load conditions given the 125°C maximum operating temperature limit.

Part Context

This part belongs to the Ferroxcube MLS series of multilayer suppressors, which are engineered specifically for EMI suppression in electronic equipment. The series offers various impedance values and current ratings within standardized SMD packages. These components utilize soft ferrite materials integrated into a ceramic multilayer structure to provide broadband noise absorption without introducing excessive series resistance.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in available documentation. Cross-referencing requires matching impedance at 100 MHz, DC resistance, current rating, and physical package dimensions.