742792032

Overview

The Würth Elektronik 742792032 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in an 0805 (2012 metric) package. It provides an impedance of 400 Ohms at a test frequency of 200 MHz and supports a maximum DC current of 300 mA. The component features a maximum DC resistance of 600 mOhms and operates within a temperature range of -55°C to +125°C. It holds AEC-Q200 qualification for automotive reliability.

Feature Summary

• Provides high impedance for effective electromagnetic interference suppression in compact surface-mount designs
• Qualified for automotive applications under the AEC-Q200 standard
• Capable of handling significant DC currents while maintaining low DC resistance

Applications

• Automotive electronic circuits requiring EMI filtering
• High-speed digital signal line protection
• Power supply output filtering

Procurement Notes

Verify the specific impedance value and current rating against the official datasheet before integration. Confirm that the 0805 package dimensions align with the PCB footprint requirements. Ensure the supplier source matches the manufacturer's authorized distribution channels to guarantee component authenticity and traceability.

Selection Notes

Select this component when high attenuation is required at higher frequencies compared to lower-impedance variants. The 0805 size offers a balance between current handling capability and board space efficiency. Consider the 300 mA current limit to prevent saturation effects in the target circuit design.

Part Context

This part belongs to the WE-CBF series of chip beads designed for SMD applications. The series includes various impedance values and package sizes to address different EMI suppression needs across consumer and industrial electronics.

Replacement Considerations

Check for alternative parts within the same WE-CBF family that offer similar impedance characteristics if stock levels are insufficient. Verify pin compatibility and thermal performance before substituting.