782422102

Overview

The Würth Elektronik 782422102 is a surface-mount EMI suppression ferrite bead from the WE-CBA series, housed in a compact 0402 (1.0mm x 0.5mm) package. It provides an impedance of 1 kOhms at 100 MHz with a maximum DC resistance of 1 Ohm and a rated current of 200 mA. The component operates within a temperature range of -55°C to +125°C and meets AEC-Q200 qualification standards for automotive applications.

Feature Summary

• Provides effective electromagnetic interference suppression for high-frequency noise filtering
• Designed for single-signal line protection in compact circuit layouts
• Qualified for automotive reliability requirements under AEC-Q200 standards

Applications

• Automotive electronic systems requiring EMI filtering
• General electronic equipment signal lines
• High-frequency noise suppression circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tolerance specifications. Confirm that the component version matches the required AEC-Q200 qualification status if intended for automotive use. Cross-reference the impedance value at 100 MHz and DC current rating with the design requirements before finalizing procurement orders.

Selection Notes

Select this component when space constraints require a 0402 footprint for EMI filtering. Ensure the circuit's DC current does not exceed 200 mA to prevent saturation or excessive heating. Verify that the 1 kOhm impedance at 100 MHz aligns with the target noise frequency spectrum. Consider the -55°C to +125°C operating range for environmental compatibility.

Part Context

This ferrite bead belongs to the WE-CBA series, which focuses on SMD EMI suppression solutions. The series offers various impedance values and current ratings in standard metric packages. The 782422102 specifically addresses the need for small-form-factor filtering in modern electronics where board real estate is limited.

Replacement Considerations

Consult the manufacturer's cross-reference tools or official substitution guides for verified alternatives. Ensure any substitute part matches the 0402 footprint, 1 kOhm impedance at 100 MHz, and 200 mA current rating. Verify that alternative components meet the same AEC-Q200 qualification if automotive application is required.