ESD-R-25B

Overview

The KEMET ESD-R-25B is a solid manganese zinc (MnZn) ferrite core designed for electromagnetic interference suppression in round cables. It features a toroidal geometry with an inner diameter of 0.500 inches (12.70 mm), an outer diameter of 1.142 inches (29.01 mm), and a length of 0.630 inches (16.00 mm). The component operates at frequencies up to 100 MHz and supports maximum operating temperatures of +60°C. It is classified as commercial grade and is available in bulk packaging.

Feature Summary

• Solid MnZn ferrite construction for effective high-frequency noise attenuation
• Toroidal design optimized for round cable applications
• Free-hanging installation method for flexible integration

Applications

• Electromagnetic interference filtering for power and signal cables
• Noise suppression in electronic equipment wiring harnesses
• Common mode choke implementation for cable assemblies

Procurement Notes

Verify the specific suffix designation against official KEMET documentation to confirm material composition and temperature ratings. Ensure the procurement specification matches the required frequency range and physical dimensions for the target cable assembly. Confirm RoHS compliance status through the manufacturer's current product release notes.

Selection Notes

Select this component when a solid, non-split ferrite core is required for permanent cable installations. The MnZn material offers high permeability suitable for lower frequency noise suppression compared to NiZn alternatives. Verify that the cable diameter fits within the 12.70 mm inner diameter constraint before finalizing the design.

Part Context

This part belongs to the ESD-R-H series of EMI cores manufactured by KEMET. The series provides various sizes and materials to address different cable diameters and frequency requirements. The ESD-R-25B specifically utilizes Manganese Zinc material, distinguishing it from Nickel Zinc variants in the same family.

Replacement Considerations

Cross-reference with other ESD-R series parts for dimensional compatibility. Verify material equivalence if substituting with generic MnZn cores. Check datasheet specifications for frequency response curves to ensure adequate attenuation performance.