74277255

Overview

The Würth Elektronik part number 74277255 is a WE-AFB LFS axial ferrite bead designed for electromagnetic interference (EMI) suppression. It features an outer diameter of 18.6 mm, an inner diameter of 10.2 mm, and a total length of 28.5 mm. The component accommodates cables with a maximum diameter of 9.7 mm. This axial configuration allows for direct integration into wiring harnesses to attenuate high-frequency noise.

Feature Summary

• Axial ferrite bead construction for EMI suppression
• LFS design compatible with lead-free soldering processes
• Integrated cable clamping mechanism for secure installation

Applications

• Cable harness noise attenuation
• Power supply line filtering
• Data communication cable protection

Procurement Notes

Verify the specific impedance characteristics and frequency response curves from the official Wurth Elektronik datasheet before finalizing the design. Ensure that the cable diameter falls within the specified 9.7 mm limit to guarantee proper mechanical fit and magnetic coupling efficiency.

Selection Notes

Select this component when axial mounting is required for effective EMI reduction on cables up to 9.7 mm in diameter. Consider the physical dimensions of 18.6 mm OD and 28.5 mm length for adequate clearance in the assembly layout compared to snap-on core alternatives.

Part Context

This part belongs to the WE-AFB LFS series, which provides axial ferrite beads for EMI suppression. The LFS designation indicates compliance with lead-free soldering standards, making it suitable for modern environmentally compliant manufacturing processes requiring robust noise filtering on wires.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Evaluate alternative axial ferrite beads based on matching impedance profiles, current ratings, and dimensional constraints if sourcing changes are necessary.