742792122

Overview

The Würth Elektronik 742792122 is a surface-mount ferrite bead from the WE-CBF series, designed for high-speed EMI suppression. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 1.3 mm height. The component provides an impedance of 220 Ohms at 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 300 mA and has a maximum DC resistance of 300 mOhms. Operating temperatures range from -55°C to +125°C.

Feature Summary

• Provides effective electromagnetic interference suppression for high-speed signal lines
• Designed for direct surface-mount placement on printed circuit boards
• Features low DC resistance to minimize signal loss in power paths

Applications

• High-speed data line filtering
• General EMI suppression in electronic circuits
• Power supply input/output filtering

Procurement Notes

Verify the specific impedance value and current rating against the official datasheet before integration. Confirm that the 1206 package dimensions align with the PCB footprint requirements. Ensure the operating temperature range meets the environmental conditions of the final assembly. Check for any recent product change notices or obsolescence alerts from the manufacturer.

Selection Notes

Select this component when a compact SMD ferrite bead is required for EMI reduction in space-constrained designs. The 1206 package offers a balance between current handling capability and board area efficiency. Consider the 220 Ohm impedance at 100 MHz for targeting specific noise frequencies. Evaluate the 300 mA current limit to ensure it exceeds the maximum DC load current of the application.

Part Context

This part belongs to the WE-CBF series of chip ferrite beads from Würth Elektronik. These components are engineered for applications requiring reliable EMI filtering in small form factors. The series is commonly used in consumer electronics, industrial controls, and automotive systems where space is limited and noise immunity is critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative suppliers by matching impedance, current rating, and package dimensions.