ESD-SR-250

Overview

The KEMET ESD-SR-250 is a snap-on ferrite core designed for electromagnetic interference suppression. It features a Ni-Zn material composition with an internal diameter of 13 mm and external dimensions of 31.5 mm x 31.6 mm x 38 mm. The component provides an impedance of 176 Ω at 25 MHz and 321 Ω at 100 MHz. It operates within a temperature range of -40 °C to +100 °C and complies with RoHS standards.

Feature Summary

• Snap-on hinged design enables rapid installation on round cables without disconnection.
• Ni-Zn ferrite material offers high impedance characteristics for effective noise attenuation.
• Free-hanging mounting style allows flexible integration into various assembly configurations.

Applications

• Electromagnetic interference suppression in consumer electronics
• Noise filtering for power and signal cables in industrial equipment
• Common mode noise reduction in data communication lines

Procurement Notes

Verify the specific manufacturer part number ESD-SR-250 against official KEMET documentation to ensure material and dimensional accuracy. Confirm that the required impedance values at 25 MHz and 100 MHz align with the target application's noise spectrum. Check for RoHS compliance requirements if applicable to the end product regulations.

Selection Notes

Select this component when a snap-on ferrite solution is required for cables with diameters up to 13 mm. Ensure the operating temperature environment falls within the specified -40 °C to +100 °C range. Consider the physical space constraints relative to the 38 mm length and 31.6 mm height dimensions during PCB or chassis layout planning.

Part Context

This component belongs to the ESD-SR Snap-on Cores series, which provides quick-installation ferrite solutions for cable noise suppression. The series utilizes Ni-Zn materials optimized for high-frequency performance. These cores are distinct from solid toroidal cores by their hinged design, facilitating easier retrofitting and maintenance on existing cable assemblies.

Replacement Considerations

Cross-reference with other ESD-SR series variants such as ESD-SR-160 for different aperture sizes. Verify compatibility with alternative manufacturers' snap-on cores having identical 13 mm inner diameter and similar impedance profiles at 100 MHz.