ESD-R-19S

Overview

The KEMET ESD-R-19S is a solid toroidal ferrite core designed for electromagnetic interference suppression. It utilizes Manganese Zinc (MnZn) material, optimized for high permeability and low-frequency noise attenuation. The component features a circular geometry with an inner diameter of 9 mm, an outer diameter of 19 mm, and an external length of 11 mm. It operates reliably within a temperature range up to +85°C and provides effective common-mode noise filtering for round cables in electronic assemblies.

Feature Summary

• Solid toroidal construction eliminates the need for assembly hardware or clips.
• Manganese Zinc composition ensures high magnetic permeability for low-frequency noise suppression.
• Circular aperture design accommodates standard round cable bundles.

Applications

• Common-mode noise filtering on power supply lines
• Signal cable interference suppression in industrial equipment
• EMI reduction in consumer electronics wiring harnesses

Procurement Notes

Verify the MnZn material specification against application frequency requirements, as NiZn variants exist in this series. Confirm physical dimensions match cable bundle constraints. Check RoHS compliance status for regulatory adherence. Ensure operating temperature limits align with the final device environment. Validate that the solid core design fits the available installation space without mechanical interference.

Selection Notes

Select this model when low-frequency noise attenuation is required over high-frequency performance. The MnZn material offers higher impedance at lower frequencies compared to NiZn alternatives. Ensure the 9mm inner diameter sufficiently encloses the target cable bundle. Consider thermal management if the core will operate near the maximum rated temperature. Verify compatibility with surrounding components due to the fixed solid geometry.

Part Context

This component belongs to the ESD-R series of solid ferrite cores manufactured by KEMET. Unlike snap-on designs, these are pre-formed rings requiring cable insertion during assembly. The series includes various materials, with this specific part utilizing Manganese Zinc for distinct frequency characteristics. It serves as a passive EMI mitigation solution for wired connections.

Replacement Considerations

Direct substitutes must match the 9mm ID, 19mm OD, and 11mm length dimensions. Material compatibility requires verifying MnZn properties for equivalent low-frequency performance. Solid core geometry must be maintained for identical installation methods. Alternative part numbers from other manufacturers should be cross-referenced for dimensional and electrical equivalence.