7427931

Overview

The Würth Elektronik 7427931 is a surface-mount ferrite chip bead from the WE-PBF series, designed for high-current applications. It features a single-line configuration with an impedance of 91 Ohms at 100 MHz and a maximum DC current rating of 17 A. The component has a maximum DC resistance of 0.9 milliohms and operates within a temperature range of -55°C to +125°C. Its physical dimensions are 8.50 mm in length, 3.00 mm in width, and a maximum height of 2.70 mm, housed in a 2-SMD J-leads package.

Feature Summary

• Engineered for high-current signal line filtering with low DC resistance
• Provides effective EMI suppression across a broad frequency spectrum
• Utilizes a robust surface-mount package suitable for automated assembly

Applications

• High-speed digital data lines requiring noise attenuation
• Power supply output filtering in compact electronic devices
• Automotive electronics systems subject to strict EMC standards

Procurement Notes

Verify the specific impedance tolerance and DC resistance values against the official datasheet before integration. Confirm that the 17 A current rating aligns with your circuit's peak operational requirements. Ensure the 2-SMD J-lead footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when high current handling capability is critical alongside EMI suppression. The low DC resistance minimizes power loss compared to standard ferrites. Consider the 91 Ohm impedance profile for target noise frequencies around 100 MHz. Evaluate thermal performance under continuous load conditions given the 17 A rating.

Part Context

This part belongs to the WE-PBF series, which focuses on high-performance ferrite beads for demanding environments. The series is characterized by its ability to handle significant DC currents while maintaining effective high-frequency attenuation. It serves as a key component in modern electronic designs where space efficiency and electrical reliability are paramount.

Replacement Considerations

No public confirmed substitute part numbers are available for this specific component.