74279241

Overview

The Würth Elektronik 74279241 is a surface-mount EMI suppression ferrite bead from the WE-CBF series. It features SMD/SMT termination and operates within a temperature range of -55°C to +125°C. The component has dimensions of 3.2 mm length, 1.6 mm width, and 1.1 mm height. It offers impedance values of 220 Ohms at 100 MHz and 240 Ohms at 200 MHz. The maximum DC current rating is 300 mA with a maximum DC resistance of 300 mOhms. It carries AEC-Q200 qualification.

Feature Summary

• High-speed EMI suppression capability for signal lines
• AEC-Q200 automotive qualification ensuring reliability
• Shielded design to contain magnetic fields

Applications

• Automotive electronics systems
• High-speed data line filtering
• General EMI suppression in compact circuits

Procurement Notes

Verify the specific impedance variant required (220 Ohms or 240 Ohms) as both are listed for this part number. Confirm that the 300 mA current rating meets the application's operational requirements. Ensure the 1.1 mm height fits within the available vertical space on the PCB assembly.

Selection Notes

Select this component when AEC-Q200 compliance is mandatory for the target application. Choose based on the specific impedance curve needed at 100 MHz versus 200 MHz. Consider the 300 mA limit against peak load currents to prevent saturation or excessive heating during operation.

Part Context

This ferrite bead belongs to the WE-CBF series designed for high-speed applications. It complements other components in the manufacturer's portfolio by providing shielded, automotive-grade noise suppression in a small surface-mount package suitable for dense PCB layouts.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.