742701111

Overview

The Würth Elektronik part number 742701111 is a WE-TOF EMI Suppression Toroidal Ferrite core. It features a solid construction with an outer diameter of 19 mm and an impedance of 155 Ohms at 100 MHz. The component operates within a temperature range of -40°C to +125°C and complies with RoHS standards.

Feature Summary

• Solid toroidal design for secure cable retention
• High impedance performance for broadband noise suppression
• Wide operating temperature capability

Applications

• Power supply cable filtering
• Data line EMI suppression
• General electronic equipment noise reduction

Procurement Notes

Verify the specific impedance value against the official datasheet, as sources indicate 155 Ohms at 100 MHz or 55 Ohms at 25 MHz. Confirm the physical dimensions match the 19 mm outer diameter requirement. Ensure the solid core style is suitable for the target cable assembly.

Selection Notes

Select this component when a fixed-diameter solid ferrite is required rather than a split-core alternative. The 19 mm outer diameter accommodates specific cable bundles. Consider the high-temperature rating for applications exceeding standard ambient limits.

Part Context

This part belongs to the WE-TOF series of toroidal ferrites designed for electromagnetic interference suppression. Unlike snap-on cores, these solid rings provide consistent magnetic properties and are typically installed during the manufacturing process before final assembly.

Replacement Considerations

Check for equivalent solid toroidal ferrites from other manufacturers with matching 19 mm outer diameters and similar impedance curves at 100 MHz. Verify that the inner diameter allows for the intended cable passage.