74270121

Overview

The Würth Elektronik 74270121 is a WE-TOF series ferrite toroid core designed for electromagnetic interference suppression. Constructed from 4W620 material, it provides an impedance of 30 ohms at 25 MHz and 50 ohms at 100 MHz. The component features a cylindrical ring core geometry with an inner diameter of 11.5 mm, an outer diameter of 19 mm, and an external height of 8 mm. It weighs approximately 7.166 grams and complies with RoHS standards.

Feature Summary

• Utilizes 4W620 ferrite material for effective high-frequency noise attenuation
• Cylindrical ring core design facilitates easy installation on wires and coaxial cables
• Optimized impedance characteristics across 25 MHz and 100 MHz test frequencies

Applications

• Electromagnetic interference suppression for signal lines
• Noise filtering for coaxial cables
• EMI mitigation for general wire harnesses

Procurement Notes

Verify the specific impedance value against the application frequency requirements, as datasheets may list values for both 25 MHz and 100 MHz. Confirm that the physical dimensions, particularly the 11.5 mm inner diameter, accommodate the target cable or wire gauge. Ensure compliance with RoHS directives is required for the specific project constraints.

Selection Notes

Select this component when a compact toroidal solution is needed for low-to-mid frequency EMI suppression. The 4W620 material offers a balance of permeability and resistivity suitable for common mode noise reduction. Consider the 11.5 mm bore size to ensure compatibility with the cable bundle diameter before finalizing the design.

Part Context

This part belongs to the WE-TOF series of ferrite toroids from Würth Elektronik. These cores are engineered for broadband noise suppression in electronic circuits. The series utilizes standardized materials like 4W620 to provide predictable impedance curves for designers working on EMC compliance.

FAQ

What is the impedance of the 74270121 at 100 MHz?

The impedance of the 74270121 is 50 ohms at a test frequency of 100 MHz.

What material is used for the core of this component?

The core is manufactured using 4W620 ferrite material.