782853121

Overview

The Würth Elektronik 782853121 is a WE-CBA series surface-mount EMI suppression ferrite bead designed for signal line applications. It features a 0805 (2012 metric) package with dimensions of 2.00mm x 1.20mm and a maximum height of 1.10mm. The component provides an impedance of 120 Ohms at 100 MHz and 180 Ohms at 300 MHz, while supporting a rated current of 2.5A. Its DC resistance is maximized at 35 milliohms. Operating within a temperature range of -55°C to +125°C, it meets AEC-Q200 automotive qualification standards.

Feature Summary

• Provides effective electromagnetic interference suppression for high-speed signal lines through high impedance characteristics across specified frequency ranges.
• Engineered for automotive reliability by meeting the AEC-Q200 qualification standard for passive components.
• Utilizes a compact 0805 surface-mount footprint to facilitate automated assembly and space-constrained PCB layouts.

Applications

• Automotive electronic systems requiring AEC-Q200 compliant signal filtering
• High-speed digital data transmission lines for noise attenuation
• Portable consumer electronics utilizing compact surface-mount designs

Procurement Notes

Verify the specific ordering suffix to ensure the correct packaging format, such as tape and reel or cut tape, matches production requirements. Confirm that the 0805 package dimensions align with the designated PCB footprint. Ensure the selected variant satisfies the required ambient operating temperature range and current handling capabilities for the target circuit design.

Selection Notes

Select this component when signal integrity protection is critical in automotive or industrial environments. The 120 Ohm impedance at 100 MHz effectively targets common noise frequencies in digital circuits. The low DC resistance minimizes voltage drop, making it suitable for sensitive signal paths where power loss must be restricted while maintaining robust EMI performance.

Part Context

This part belongs to the WE-CBA series from Würth Elektronik, which specializes in surface-mount ferrite beads for EMI suppression. The series offers various impedance values and current ratings within standardized packages. The 782853121 specifically addresses the need for reliable noise filtering in compact form factors, balancing electrical performance with mechanical durability for modern electronic assemblies.

Replacement Considerations

Consult official manufacturer substitution lists for verified equivalents. Cross-referencing requires matching impedance curves, current ratings, and package dimensions to ensure functional compatibility without redesigning the printed circuit board layout.