742792040

Overview

The Würth Elektronik 742792040 is a surface-mount EMI suppression ferrite bead from the WE-CBF series. It features an 0805 (2012 metric) package with dimensions of 2 mm length, 1.2 mm width, and 0.9 mm height. The component provides an impedance of 600 Ohms at 100 MHz and supports a maximum DC current of 2000 mA. It has a maximum DC resistance of 30 mOhms and operates within a temperature range of -55°C to +125°C. The part is AEC-Q200 qualified.

Feature Summary

• Provides high impedance for effective electromagnetic interference suppression in compact designs
• Supports high current ratings suitable for power line filtering applications
• AEC-Q200 qualified for automotive reliability standards

Applications

• Automotive electronics power supply filtering
• General purpose EMI suppression in consumer electronics
• Data line noise reduction in digital devices

Procurement Notes

Verify the specific impedance tolerance and DC resistance values against the official manufacturer datasheet before integration. Confirm that the 0805 footprint matches the target PCB layout. Ensure the selected variant meets the required AEC-Q200 qualification if used in automotive contexts. Cross-reference the part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when high current handling capability is required alongside significant noise attenuation. The 0805 size offers a balance between thermal performance and space constraints. Compare the 600 Ohm impedance against circuit requirements to ensure adequate filtering without excessive signal loss. Consider the low DC resistance to minimize voltage drop in power-sensitive applications.

Part Context

This ferrite bead belongs to the WE-CBF series, designed for surface-mount assembly. It utilizes specialized ferrite material optimized for broadband noise absorption. The series is engineered to meet stringent automotive quality standards, ensuring stability under varying thermal and electrical conditions common in modern electronic systems.

Replacement Considerations

Check for direct substitutes within the same WE-CBF family with adjusted impedance or current ratings. Verify compatibility with existing PCB footprints when considering alternative manufacturers. Ensure any replacement maintains the AEC-Q200 qualification if the application demands automotive-grade reliability.