74279263

Overview

The Würth Elektronik 74279263 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in an 0603 (1608 metric) package. It exhibits an impedance of 220 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 500 mA. The component has a maximum DC resistance of 400 mOhms and operates within a temperature range of -55°C to +125°C. It meets AEC-Q200 automotive qualification standards.

Feature Summary

• Provides electromagnetic interference suppression for high-speed digital signal lines
• Automotive-grade reliability certified under AEC-Q200 standards
• Designed for compact surface-mount integration in dense PCB layouts

Applications

• High-speed data interfaces such as USB 2.0 and IEEE 1394
• LVDS signal line protection
• Control signals and RS232 communication lines

Procurement Notes

Verify the specific suffix code on the ordering label to confirm the exact impedance value and tolerance, as variations exist within the WE-CBF family. Ensure the procurement documentation explicitly states AEC-Q200 compliance if automotive application is required. Cross-reference the manufacturer datasheet to confirm the package dimensions match the target footprint.

Selection Notes

Select this component when space constraints require an 0603 footprint with moderate current handling capabilities. The 220 Ohm impedance at 100 MHz targets noise frequencies common in digital signaling. Verify that the 500 mA current rating exceeds the peak operating current of the protected circuit to prevent saturation or excessive heating during normal operation.

Part Context

This part belongs to the WE-CBF SMD EMI Suppression Ferrite Bead family manufactured by Würth Elektronik. The series offers various impedance values and current ratings across multiple standard package sizes, including 0402, 0603, and 0805. These components are engineered for general-purpose noise filtering in consumer electronics and automotive systems requiring reliable signal integrity.

Replacement Considerations

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