78279224401

Overview

The Würth Elektronik part number 78279224401 is a multilayer power suppression ferrite bead belonging to the WE-MPSA series. It features a 2220 [5550 Metric] surface-mount package and provides an impedance of 400 ohms at 100 MHz with a tolerance of ±25%. The component supports a maximum DC current rating of 4.5 A and has a maximum DC resistance of 0.02 ohms. It is designed for EMI suppression in power supply lines and complies with RoHS3 standards.

Feature Summary

• Multilayer construction for effective electromagnetic interference suppression in power circuits
• High current handling capability suitable for demanding power supply applications
• Surface-mount design optimized for automated assembly processes

Applications

• EMI suppression in power supply input stages
• Noise filtering in high-current DC-DC converter outputs
• Signal integrity enhancement in automotive electronic modules

Procurement Notes

Verify the specific impedance tolerance and DC resistance values against the official datasheet before integration. Confirm that the 2220 package dimensions align with the target PCB footprint. Ensure the selected variant meets all required environmental compliance standards for the intended deployment region.

Selection Notes

Select this component when high current capacity is required alongside significant noise attenuation. The low DC resistance minimizes power loss in high-amperage paths. Evaluate thermal performance under continuous load conditions to ensure reliability within the specified operating temperature range.

Part Context

This component is part of the WE-MPSA series, which focuses on multilayer power suppression beads. These components are engineered to replace traditional wire-wound beads in compact designs while maintaining high current ratings. The series targets applications requiring robust EMI control in space-constrained environments.

Replacement Considerations

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