742792124

Overview

The Würth Elektronik 742792124 is a high-speed EMI suppression ferrite bead from the WE-CBF series, designed for surface-mount applications. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 1.1 mm height. The component provides an impedance of 470 Ohms at 100 MHz and 200 Ohms at 25 MHz. It supports a maximum DC current of 200 mA with a maximum DC resistance of 0.30 Ohms. The device operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Feature Summary

• Provides effective electromagnetic interference suppression in high-speed signal lines
• Features shielded construction to minimize external magnetic field interaction
• Complies with AEC-Q200 automotive reliability standards

Applications

• Automotive electronic systems requiring AEC-Q200 compliance
• High-speed data line filtering
• General EMI suppression in compact SMD designs

Procurement Notes

Verify the specific impedance value against the datasheet, as distributor listings may contain discrepancies between 150 Ohms and 470 Ohms. Confirm the package type is 1206 and the current rating is 200 mA. Ensure the AEC-Q200 qualification status matches project requirements before finalizing procurement.

Selection Notes

Select this component when space-constrained high-speed filtering is required in automotive or industrial environments. The 1206 footprint offers a balance between current handling and board area. Consider the 200 mA current limit and 0.30 Ohm DC resistance for power integrity analysis. Verify impedance characteristics at the target frequency to ensure adequate attenuation.

Part Context

This part belongs to the WE-CBF series of shielded ferrite beads manufactured by Würth Elektronik. The series is engineered for EMI suppression in sensitive electronic circuits. The 742792124 variant specifically targets applications needing robust noise filtering in a standard surface-mount package format suitable for automated assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching impedance, current rating, and package dimensions.