MLS1206-4S4-401

Overview

The Ferroxcube MLS1206-4S4-401 is a surface-mount ferrite bead designed for electromagnetic interference suppression in high-density electronic circuits. It features a 1206 (3216 metric) package size and utilizes the 4S4 material composition to provide effective noise attenuation across a broad frequency spectrum. The component exhibits an impedance of 400 ohms at 100 MHz, ensuring robust signal integrity protection. It supports a maximum DC current rating of 400 mA with a low DC resistance of 200 milliohms, minimizing power loss in sensitive power lines.

Feature Summary

• Monolithic multilayer construction integrates electrodes within a ferrite structure for enhanced magnetic shielding
• Suitable for high-density mounting applications due to compact surface-mount design
• Provides effective broadband noise suppression through optimized ferrite material properties

Applications

• High-density circuit board layouts requiring compact EMI filtering
• Power supply line noise suppression in portable electronics
• Signal integrity protection in communication modules

Procurement Notes

Verify the specific impedance tolerance and DC resistance values against the official manufacturer datasheet before integration. Confirm that the 1206 package dimensions align with your PCB footprint requirements. Ensure the 400 mA current rating meets the operational load conditions of your target application to prevent saturation or excessive heating during continuous use.

Selection Notes

Select this component when space constraints necessitate a small form factor like the 1206 package while maintaining significant noise attenuation capabilities. The 4S4 material offers a balance between impedance performance and current handling suitable for general-purpose digital and analog signal lines. Consider the 400 mA rating to ensure adequate headroom for transient currents without compromising suppression effectiveness.

Part Context

This part belongs to the Ferroxcube MLS series of multilayer suppressors and inductors. These components are engineered to replace traditional discrete ferrite beads by integrating the filtering function into a monolithic structure. The series supports modern manufacturing techniques for automated assembly, providing consistent performance and reliability for mass-produced electronic devices requiring efficient electromagnetic compatibility solutions.

Replacement Considerations

Cross-reference with other MLS series variants such as MLS1206-4S4-900 or MLS1206-4S4-121 if different impedance levels are required. Verify that substitute parts maintain the same 1206 package dimensions and compatible current ratings to ensure mechanical and electrical compatibility within the existing circuit design.