74279214

Overview

The Würth Elektronik 74279214 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in a 1206 (3216 metric) package. It exhibits an impedance of 1000 ohms at 100 MHz with a maximum DC current rating of 200 mA and a tolerance of 25%. The component features a maximum DC resistance of 450 milliohms and operates within a temperature range of -55°C to +125°C. Its physical dimensions are 3.2 mm in length, 1.6 mm in width, and 1.1 mm in height. The device is AEC-Q200 qualified for automotive applications.

Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics at target frequencies.
• Constructed using multilayer ferrite technology for compact surface-mount integration.
• Qualified under AEC-Q200 standards for reliability in automotive environments.

Applications

• Electromagnetic interference suppression in general electronic circuits
• Signal line filtering in automotive electronics systems
• Noise reduction on data and power lines in digital devices

Procurement Notes

Verify the specific impedance value against official datasheets, as distributor listings may show conflicting figures such as 1000 or 1200 ohms. Confirm the AEC-Q200 qualification status directly with the manufacturer documentation. Ensure the 1206 package dimensions and terminal type match the design requirements before finalizing procurement orders.

Selection Notes

Select this component when a low-profile SMD ferrite bead is required for noise suppression in space-constrained designs. The 200 mA current rating suits low-power signal lines rather than high-current power rails. Consider the -55°C to +125°C operating range for harsh environment compatibility. Verify that the 450 milliohm DC resistance meets the voltage drop constraints of the specific circuit application.

Part Context

This part belongs to the WE-CBF series of surface-mount EMI suppression ferrite beads manufactured by Würth Elektronik. The series utilizes multilayer ferrite construction to provide effective noise attenuation in compact footprints. These components are designed for automated assembly processes and are suitable for both consumer and automotive electronics applications requiring reliable high-frequency noise suppression.

Replacement Considerations

Consult official Wurth Elektronik documentation for confirmed substitute part numbers within the WE-CBF series. Do not assume cross-compatibility with other manufacturers' 1206 ferrite beads without verifying impedance curves and current ratings. Check for equivalent AEC-Q200 qualification if automotive usage is required.