782422221

Overview

The Würth Elektronik 782422221 is a surface-mount EMI suppression ferrite bead from the WE-CBA series, designed for high-frequency noise attenuation in compact electronic assemblies. It features an impedance of 220 ohms at 100 MHz and supports a maximum DC current of 400 mA. The component exhibits a maximum DC resistance of 0.3 ohms with a tolerance of ±25%. Packaged in a 0402 (1005 metric) footprint measuring 1.0 mm x 0.5 mm x 0.5 mm, it operates within a temperature range of -55°C to +125°C. This part holds AEC-Q200 qualification, ensuring reliability for automotive applications.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Compact 0402 surface-mount package design
• High impedance performance at 100 MHz for EMI suppression

Applications

• Automotive electronics systems
• Portable consumer devices
• Communication equipment signal lines

Procurement Notes

Verify the specific suffix codes against official Wurth Elektronik documentation to confirm exact impedance and current ratings. Ensure compliance with RoHS directives and REACH regulations as stated in the manufacturer's datasheet. Cross-reference the AEC-Q200 certification status directly with the supplier to validate automotive grade suitability before integration into safety-critical designs.

Selection Notes

Select this component when space constraints require a 0402 footprint while maintaining significant noise suppression capabilities. The 400 mA current rating suits low-power signal lines rather than high-current power rails. Consider the 220 ohm impedance profile for target frequency bands around 100 MHz. Verify thermal management requirements given the small physical dimensions and operating temperature limits.

Part Context

This ferrite bead belongs to the WE-CBA series, which focuses on providing effective electromagnetic interference suppression in minimal board areas. The series is engineered for SMT processes, offering consistent performance across automated assembly lines. Wurth Elektronik positions these components for modern miniaturized electronics where traditional larger beads cannot fit.

Replacement Considerations

Consult official Wurth Elektronik substitution guides for direct equivalents. Verify that any alternative maintains the same 0402 footprint, 220 ohm impedance at 100 MHz, and 400 mA current handling capacity. Ensure replacement parts also meet AEC-Q200 standards if used in automotive contexts.