742701712

Overview

The Würth Elektronik 742701712 is a ferrite toroidal core from the WE-TOF series, designed for EMI suppression. It utilizes 7W700 material composition and features an inner diameter of 5 mm, an outer diameter of 9 mm, and an external height of 8 mm. The component provides an impedance of 44 Ohms at 25 MHz, with testing conducted at 100 MHz. It is supplied in bulk packaging and weighs approximately 1.643 grams per unit.

Feature Summary

• Utilizes 7W700 ferrite material composition for effective high-frequency noise attenuation
• Toroidal ring core geometry facilitates free-hanging installation on cables
• Engineered specifically for electromagnetic interference (EMI) suppression applications

Applications

• Cable EMI suppression for signal lines
• Common mode choke implementation for data buses
• Noise filtering for electronic equipment interconnects

Procurement Notes

Verify the specific impedance value and material grade against the manufacturer's official datasheet prior to integration. Confirm that the inner diameter accommodates the target cable or wire gauge without mechanical stress. Ensure compliance with RoHS directives if required by the end-product specifications. Cross-reference the part number to distinguish it from similar WE-TOF variants with different impedance ratings.

Selection Notes

Select this component when a compact toroidal solution is required for suppressing common-mode noise on cables up to 4.5 mm in diameter. The 7W700 material offers a balanced performance profile for general-purpose EMI reduction. Consider the physical dimensions to ensure adequate clearance within the enclosure. Evaluate the impedance characteristics at the specific noise frequency of interest to confirm sufficient attenuation levels.

Part Context

This component belongs to the WE-TOF series of ferrite rings manufactured by Würth Elektronik. The series provides various impedance values and material compositions to address diverse EMI suppression needs. The 742701712 variant specifically targets applications requiring moderate impedance at 25 MHz with a standard 5 mm bore size for versatile cable compatibility.

Replacement Considerations

Substitute only with other Würth Elektronik WE-TOF parts sharing identical 5 mm inner diameter and compatible impedance profiles. Verify that alternative materials meet the same frequency response requirements. Do not replace with clamp-on cores unless mechanical mounting constraints allow for such modification.