742792656

Overview

The Würth Elektronik 742792656 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in a compact 0603 (1608 metric) package. It provides an impedance of 750 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 400 mA. The component features a maximum DC resistance of 350 mOhms with a tolerance of ±25%. It is qualified under AEC-Q200 standards for automotive reliability and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides effective electromagnetic interference suppression through high impedance characteristics at specified frequencies.
• Automotive-grade qualification ensures reliability and performance consistency in demanding vehicle environments.
• Compact surface-mount footprint facilitates automated assembly and efficient PCB space utilization.

Applications

• Automotive electronic circuit protection
• Signal line noise filtering
• Power supply output decoupling

Procurement Notes

Verify the specific impedance value against the official datasheet, as distributor listings may vary between 100 MHz and 150 MHz ratings. Confirm the AEC-Q200 automotive qualification status directly with the manufacturer documentation. Ensure the selected package matches the required 0603 footprint dimensions for proper board layout integration.

Selection Notes

Select this component when a low-profile SMD ferrite bead is required for high-frequency noise attenuation in signal paths. The 400 mA current rating suits moderate power applications, while the 350 mOhm resistance minimizes voltage drop. Consider the AEC-Q200 certification if the design targets automotive subsystems requiring validated component durability.

Part Context

This part belongs to the WE-CBF series of chip ferrite beads designed for EMI suppression. The series offers various impedance values and current ratings in standard industrial packages. The 742792656 specifically addresses needs for compact, automotive-compliant filtering solutions in modern electronics where space constraints and reliability are critical design factors.

Replacement Considerations

Cross-reference with other WE-CBF series parts for different impedance or current requirements. Verify package compatibility before substituting with generic 0603 ferrite beads, as material composition and frequency response curves differ significantly between manufacturers.