742700221

Overview

The Würth Elektronik part number 742700221 is a toroidal ferrite core belonging to the WE-SAFB series. It features an inner diameter of 4 mm and an outer diameter of 6 mm, with a length of 4 mm. The component provides an impedance of 45 ohms at 100 MHz. Constructed for electromagnetic interference suppression, it operates within a temperature range defined by its material specifications.

Feature Summary

• Toroidal geometry designed for cable wrapping applications
• High impedance characteristic for effective noise attenuation
• Compact dimensions suitable for space-constrained environments

Applications

• Electromagnetic interference suppression on cables
• Signal integrity enhancement in data lines
• Noise filtering in electronic assemblies

Procurement Notes

Verify the specific impedance value and dimensional tolerances against the official datasheet before integration. Confirm that the 4 mm inner diameter accommodates the target cable bundle without excessive strain. Ensure compliance with RoHS standards if required by the end product regulations.

Selection Notes

Select this component when a low-profile toroidal core is needed for small diameter cables. The 45 ohm impedance offers a balance between attenuation and signal transmission for common mode noise. Consider the 4 mm length for limited axial space availability compared to larger snap-on alternatives.

Part Context

This component is part of the WE-SAFB series from Würth Elektronik, specialized as a ferrite core for EMI suppression. Unlike snap-on cores, the toroidal shape requires cable threading, offering potentially higher performance per unit volume for specific frequency ranges.