ESD-R-57-P

Overview

The KEMET ESD-R-57-P is a solid toroidal ferrite core designed for round cables. It features a manganese-zinc (MnZn) composition suitable for low and high-frequency applications up to 10 MHz. The component has a maximum outer diameter of 59.0 mm, a minimum inner diameter of 34.0 mm, and a length of 21.0 mm. It is coated in green and operates at a maximum temperature of +85°C.

Feature Summary

• Solid toroidal design for secure cable mounting
• Manganese-zinc material for broad frequency suppression
• Green protective coating for environmental resistance

Applications

• Electrostatic discharge protection on round cables
• Low-frequency electromagnetic interference suppression
• High-frequency noise filtering in wiring harnesses

Procurement Notes

Verify the MnZn material specification against project requirements for frequencies up to 10 MHz. Confirm the +85°C maximum operating temperature limit fits the thermal environment. Ensure the 34.0 mm minimum inner diameter accommodates the target cable bundle size without compression.

Selection Notes

Select this part when solid construction is preferred over split cores for permanent installations. The MnZn composition offers effective attenuation in mixed frequency ranges. Consider the physical dimensions to ensure adequate clearance around the cable assembly during routing.

Part Context

This component belongs to the KEMET ESD-R series of solid toroidal ferrite cores. These cores are engineered specifically for suppressing electromagnetic interference on round cables. The series provides various sizes to accommodate different cable diameters while maintaining consistent magnetic properties.

Replacement Considerations

Public confirmed substitute part numbers: NEC-ESD-R-57D-1.