7427151

Overview

The Würth Elektronik 7427151 is a STAR-RING snap ferrite core designed for electromagnetic interference suppression. It features a split design with an internal diameter of 14.5 mm and includes a safety key mechanism to ensure secure locking on cables. The component measures 40 mm in width, 30 mm in height, and 20 mm in depth. It exhibits an impedance of 64 Ω at 25 MHz and 119 Ω at 100 MHz. Constructed from 4W620 material, it complies with RoHS and REACH standards.

Feature Summary

• Incorporates safety key technology to prevent accidental opening and maintain secure cable retention
• Utilizes split construction for rapid installation over existing wiring without disconnection
• Engineered to provide reliable electromagnetic compatibility through high-frequency impedance

Applications

• Power supply cable filtering
• Computer data line protection
• General circuit board EMI suppression

Procurement Notes

Verify the specific suffix 'S' against procurement requirements, as it indicates the inclusion of the safety key feature which distinguishes this variant from standard models. Confirm that the 14.5 mm aperture matches the target cable diameter to ensure proper fitment. Cross-reference the 4W620 material specification with project frequency requirements to validate performance at 25 MHz and 100 MHz. Ensure compliance with RoHS and REACH regulations is documented for the final assembly.

Selection Notes

Select this model when a split ferrite core with a 14.5 mm inner diameter is required for post-manufacturing cable installation. The presence of the safety key makes it suitable for applications where vibration resistance or security lock functionality is critical. Choose based on the impedance profile of 64 Ω at 25 MHz and 119 Ω at 100 MHz to address specific noise frequencies. Consider the external dimensions of 40x30x20 mm for spatial constraints within the enclosure.

Part Context

This component belongs to the STAR-RING series of snap ferrites manufactured by Würth Elektronik. The series focuses on providing easy-to-install solutions for electromagnetic interference mitigation. The 7427151 specifically represents the variant equipped with safety key technology, differentiating it from non-keyed counterparts like the 7427151S which shares similar electrical characteristics but lacks the locking mechanism.

Replacement Considerations

The part number 7427151S serves as a direct substitute within the same series, sharing identical electrical parameters and physical dimensions while differing primarily in the safety key configuration.