74277290

Overview

The Würth Elektronik 74277290 is an axial ferrite bead from the WE-AFB series, designed for EMI suppression. It utilizes 8W5000 core material and offers a nominal impedance of 50 Ohms at a test frequency of 10 MHz. The component features an inside diameter of 12.8 mm, an outside diameter of 26.6 mm, and an outside height of 28.5 mm. It operates within a standard temperature range and complies with RoHS standards.

Feature Summary

• Provides electromagnetic interference suppression through high-frequency noise attenuation
• Utilizes 8W5000 ferrite material for stable performance across operating conditions
• Designed as an axial bead for direct integration into cable assemblies

Applications

• General EMI suppression on cables
• Low-frequency noise filtering applications

Procurement Notes

Verify that the required impedance matches the specific application's noise spectrum, as the 50 Ohm rating is defined at 10 MHz. Confirm that the 12.8 mm internal diameter accommodates the target cable bundle without excessive clearance. Ensure compliance with RoHS directives is necessary for the final product assembly. Check for any specific packaging requirements if bulk handling is involved.

Selection Notes

Select this part when axial ferrite beads are preferred over snap-on cores for permanent cable installations. The 12.8 mm bore size suits medium-diameter cables. Consider the 8W5000 material properties for low-frequency attenuation needs. Compare dimensions against available space constraints in the wiring harness layout before finalizing the design.

Part Context

This component belongs to the WE-AFB (Axial Ferrite Bead) family from Würth Elektronik. These parts are distinct from hinged or split-core types, offering a solid cylindrical geometry. The series focuses on providing reliable EMI protection for wires and cables where a fixed, non-removable solution is acceptable.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.