74270038

Overview

The Würth Elektronik part number 74270038 is a cylindrical ferrite core belonging to the WE-AFB series. It is designed for electromagnetic interference suppression on cables and wires. The component features an inner diameter of 3.55 mm and an outer diameter of 12 mm, with a total length of 25 mm. It exhibits an impedance of 350 ohms at 25 MHz. The material composition is optimized for high-frequency noise attenuation in electronic assemblies.

Feature Summary

• Cylindrical geometry suitable for axial cable mounting
• High impedance characteristic at 25 MHz for effective noise filtering
• Fixed dimensions providing consistent fit for standard wire gauges

Applications

• Electromagnetic interference suppression on power cables
• Noise reduction on data transmission lines
• Common mode choke applications for single conductors

Procurement Notes

Verify the specific impedance value and frequency rating against the official datasheet before integration. Confirm that the inner diameter accommodates the target cable insulation thickness without mechanical stress. Ensure compliance with RoHS standards if required by the end product specifications.

Selection Notes

Select this component when a fixed cylindrical form factor is required for axial ferrite installation. The 350-ohm impedance at 25 MHz indicates suitability for higher frequency noise profiles compared to lower impedance alternatives. Consider the 12 mm outer diameter for available spatial constraints within the enclosure design.

Part Context

This ferrite core is part of the WE-AFB series from Würth Elektronik, which specializes in passive components for signal integrity and power line filtering. The cylindrical shape distinguishes it from snap-on or split-core variants, offering a permanent solution for cable treatment rather than temporary testing or retrofitting scenarios.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-reference with other cylindrical ferrite cores only if impedance curves and physical dimensions match exactly.