ESD-R-57D

Overview

The KEMET ESD-R-57D is a solid nickel-zinc (NiZn) ferrite toroidal core designed for electromagnetic interference suppression. It features a circular geometry with an inner diameter of 36.00 mm, an outer diameter of 57.00 mm, and a length of 20.00 mm. The component operates within a temperature range of -25°C to +85°C and is rated for frequencies up to 300 MHz. It is classified as a free-hanging cable ferrite suitable for solid installation.

Feature Summary

• Constructed from nickel-zinc ferrite material for high-frequency noise attenuation
• Solid toroidal design provides structural integrity for cable management
• Free-hanging mounting style allows flexible integration into wire harnesses

Applications

• Electromagnetic interference filtering in electronic assemblies
• Cable noise suppression in industrial equipment
• Signal integrity enhancement in data transmission lines

Procurement Notes

Verify the specific part number suffix against official KEMET documentation to ensure correct dimensional tolerances and material composition. Confirm that the NiZn material grade aligns with the required frequency spectrum for the intended application. Cross-reference the operating temperature limits with system environmental conditions to guarantee reliable performance under thermal stress.

Selection Notes

Select this component when a solid, non-split ferrite core is required for cables with diameters near 36 mm. The NiZn composition is appropriate for higher frequency applications compared to MnZn alternatives. Ensure the physical dimensions accommodate the cable bundle while maintaining sufficient clearance for installation and heat dissipation within the enclosure.

Part Context

This component belongs to the KEMET ESD-R series of solid ferrite cores. The series offers various standardized sizes to accommodate different cable diameters. These cores are engineered for robust EMI suppression in environments where split-core accessibility is not feasible or where permanent magnetic shielding is preferred over adjustable clamping mechanisms.

Replacement Considerations

Public confirmed substitute part numbers: None identified.