74279243

Overview

The Würth Elektronik WE-CBF 74279243 is a surface-mount EMI suppression ferrite bead in an 1806 package. It provides 75 Ohms impedance at 100 MHz with a maximum DC current rating of 3000 mA. The component features a low DC resistance of 0.025 Ohms and operates between -55°C and +125°C. It holds AEC-Q200 qualification for automotive reliability.

Feature Summary

• High current handling capability suitable for power line filtering
• Automotive-grade reliability certified under AEC-Q200 standards
• Low insertion loss due to minimal DC resistance

Applications

• Automotive electronics power supply filtering
• DC-DC converter output noise suppression
• High-current signal line EMI mitigation

Procurement Notes

Verify the specific impedance tolerance and DC resistance values against the official manufacturer datasheet before integration. Confirm that the 1806 package dimensions align with your PCB footprint requirements. Ensure the selected supplier provides traceable documentation for AEC-Q200 compliance to meet automotive quality standards.

Selection Notes

Select this component when high current capacity is required alongside effective high-frequency noise attenuation. The 1806 case size supports significant current flow without excessive thermal rise. Consider the low DC resistance to minimize voltage drop in sensitive power distribution networks.

Part Context

This part belongs to the WE-CBF series, designed for compact EMI suppression in space-constrained applications. The series offers various impedance and current ratings across multiple package sizes to support diverse circuit protection needs.

Replacement Considerations

Check for direct substitutes within the WE-CBF family offering similar 1806 dimensions and comparable 75 Ohm impedance at 100 MHz. Verify that any alternative maintains the 3A current rating and AEC-Q200 certification if used in automotive contexts.