ESD-R-25S

Overview

The KEMET ESD-R-25S is a solid manganese zinc (MnZn) ferrite core designed for electromagnetic interference suppression. It features a circular geometry with an internal diameter of 12.7 mm and an external diameter of 29.01 mm. The component has a length of 16.00 mm and operates up to +85°C. It provides an impedance of 417 Ω at 100 MHz, making it suitable for filtering applications in electronic circuits.

Feature Summary

• Solid MnZn ferrite construction for effective EMI suppression
• Snap-on design facilitates quick installation on cables
• UL94V-2 flame resistant rating for safety compliance

Applications

• Electromagnetic interference suppression in electronic circuits
• Signal filtering for round cables
• Consumer electronics noise reduction

Procurement Notes

Verify the specific impedance requirements against the application's frequency spectrum before procurement. Confirm that the cable diameter fits within the 12.7 mm internal bore. Check for RoHS compliance status if required by regional regulations. Ensure the operating temperature range aligns with the device's environmental conditions.

Selection Notes

Select this component when solid core stability is preferred over split-core designs. The MnZn material offers high permeability for low-frequency noise attenuation. Consider the physical dimensions to ensure adequate clearance around the cable assembly. Evaluate the thermal environment to ensure operation remains within the specified temperature limits.

Part Context

This part belongs to the ESD-R-H series of toroidal cores from KEMET. These components are engineered for general-purpose EMI filtering. The series includes various sizes to accommodate different cable diameters while maintaining consistent magnetic properties.

Replacement Considerations

Consult official KEMET documentation for verified substitute part numbers. Ensure any replacement matches the internal diameter, material composition, and impedance characteristics.