74279208

Overview

The Würth Elektronik 74279208 is a WE-CBF series ferrite chip bead designed for signal line EMI suppression. It features a 0805 (2012 metric) surface-mount package with dimensions of 2.00mm x 1.20mm x 1.10mm maximum height. The component provides an impedance of 40 Ohms at 100 MHz and supports a maximum DC current of 500mA. Its maximum DC resistance is 150 milliohms. It operates within a temperature range of -55°C to 125°C.

Feature Summary

• Provides effective electromagnetic interference suppression for single signal lines
• Offers low DC resistance to minimize signal loss in power paths
• Designed for direct surface mounting on printed circuit boards

Applications

• Signal line filtering in electronic circuits
• EMI suppression in compact surface-mount designs
• High-frequency noise attenuation in consumer electronics

Procurement Notes

Verify component status as the part is obsolete and no longer manufactured. Confirm availability of qualified substitutes such as 742792012 from the same manufacturer. Ensure replacement components match original electrical specifications including impedance, current rating, and package dimensions for valid integration.

Selection Notes

Select this component for applications requiring small form factor EMI filtering. The 0805 package suits space-constrained layouts. Evaluate the 500mA current rating against circuit requirements. Consider the 40 Ohm impedance at 100 MHz for target frequency noise reduction. Verify thermal performance within the specified operating temperature range.

Part Context

This component belongs to the WE-CBF series of ferrite beads from Würth Elektronik. The series focuses on providing reliable EMI suppression solutions in compact SMD packages. These components are engineered for high-performance noise filtering in modern electronic devices where board space is limited.

Replacement Considerations

Part number 742792012 is listed as a substitute by Würth Elektronik.