742792631

Overview

The Würth Elektronik 742792631 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in a 0603 (1608 metric) package. It provides an impedance of 240 Ohms at 100 MHz and supports a maximum DC current of 200 mA with a maximum DC resistance of 400 mOhms. The component operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

Feature Summary

• Designed for single signal line EMI suppression applications
• AEC-Q200 qualified for automotive electronic environments
• Compact 0603 surface-mount footprint for space-constrained designs

Applications

• Automotive electronics signal lines
• High-speed digital interface protection
• Portable device EMI filtering

Procurement Notes

Verify part authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notices regarding material or process updates. Ensure storage conditions meet moisture sensitivity level requirements before reflow soldering.

Selection Notes

Select this component when a compact SMD ferrite bead is required for high-frequency noise attenuation on low-current signal traces. The 240 Ohm impedance at 100 MHz suits broadband suppression needs. Verify that the 200 mA current rating exceeds the maximum operating current of the protected circuit to prevent saturation.

Part Context

This component belongs to the WE-CBF family of surface-mount ferrite beads manufactured by Würth Elektronik. These parts are engineered for electromagnetic interference suppression in modern electronic assemblies, offering consistent performance across a wide temperature range while maintaining small physical dimensions suitable for automated pick-and-place manufacturing.

Replacement Considerations

The datasheet indicates that part number 74279263 is the recommended replacement for the discontinued 742792631. Verify electrical parameters and package compatibility before substitution.