742792091

Overview

The Würth Elektronik 742792091 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, designed for high-speed signal integrity. 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 1500 Ohms at 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 200 mA and has a maximum DC resistance of 0.55 Ohms. Operating within a temperature range of -55°C to +125°C, it is AEC-Q200 qualified for automotive applications.

Feature Summary

• Provides effective electromagnetic interference suppression in compact surface-mount form factors
• Engineered for high-speed signal lines with low DC resistance to minimize signal loss
• Qualified for automotive electronics under AEC-Q200 reliability standards

Applications

• High-speed data line filtering in automotive infotainment systems
• EMI suppression on USB and HDMI interfaces in consumer electronics
• Signal integrity protection in portable computing devices

Procurement Notes

Verify the specific impedance value and DC current rating against the official datasheet before integration, as variations exist within the WE-CBF series. Confirm that the 0805 package footprint matches your PCB layout constraints. Ensure the supplier provides documentation confirming AEC-Q200 qualification if the application requires automotive-grade compliance. Check for any recent product change notices regarding material composition or manufacturing location.

Selection Notes

Select this component when space-constrained designs require significant attenuation at 100 MHz without introducing excessive voltage drop. The 200 mA current rating suits low-power signal lines rather than power delivery paths. Consider the 0.55 Ohm DC resistance impact on signal levels. The AEC-Q200 qualification makes it suitable for environments requiring higher thermal and mechanical stability compared to standard commercial grade parts.

Part Context

This part belongs to the WE-CBF series of shielded SMD ferrite beads from Würth Elektronik. These components are specifically engineered to suppress electromagnetic interference in high-speed digital circuits. The series offers various impedance values and current ratings in standardized packages like 0402, 0603, and 0805, allowing designers to balance performance with board space requirements.

Replacement Considerations

Cross-reference with other WE-CBF variants such as 742792095 for different impedance needs. Verify physical compatibility with existing footprints when substituting with similar 0805 ferrite beads from other manufacturers.