742792017

Overview

The Würth Elektronik 742792017 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, designed for high-current applications. It features an impedance of 90 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 3500 mA (3.5 A). The component exhibits a maximum DC resistance of 20 mOhms with a 25% impedance tolerance. Housed in an 0805 (2012 metric) package measuring 2.0 mm x 1.2 mm x 0.9 mm, it operates within a temperature range of -55°C to +125°C. The device is qualified under AEC-Q200 standards.

Feature Summary

• High current handling capability suitable for power line filtering
• Automotive grade qualification ensuring reliability in harsh environments
• Low DC resistance minimizes voltage drop and power loss
• Compact SMD footprint facilitates dense PCB layout

Applications

• Automotive electronic systems requiring AEC-Q200 compliance
• Power supply output filtering for noise suppression
• High-speed data lines in automotive infotainment or control units
• EMI suppression on battery connection circuits

Procurement Notes

Verify the specific manufacturer part number against official Wurth Elektronik documentation to ensure accuracy. Confirm that the required current rating and impedance specifications align with the design requirements. Check for any recent Product Change Notifications (PCN) regarding manufacturing site or material changes. Ensure the ordering suffix matches the desired packaging format if applicable. Cross-reference the datasheet version date to confirm the validity of the electrical parameters provided.

Selection Notes

Select this component when a compact ferrite bead capable of handling currents up to 3.5 A is required. The 90 Ohm impedance provides effective attenuation at 100 MHz while maintaining low insertion loss due to minimal DC resistance. The AEC-Q200 qualification makes it suitable for automotive applications where long-term reliability and thermal stability are critical. Consider the 0805 package size for space-constrained designs needing robust EMI performance.

Part Context

This component belongs to the WE-CBF series of SMT EMI suppression ferrite beads manufactured by Würth Elektronik. The series is characterized by its ability to handle high DC currents while providing significant impedance in a small surface-mount package. These beads are engineered to suppress electromagnetic interference in power and signal lines, offering a reliable solution for modern electronic devices requiring compact and efficient filtering components.

Replacement Considerations

Consult official Wurth Elektronik substitution guides for verified alternatives. Ensure any substitute maintains equivalent current ratings, impedance characteristics, and package dimensions. Verify that replacement parts meet the same AEC-Q200 automotive qualification standards if used in automotive applications.