ESD-R-47D-1

Overview

The KEMET ESD-R-47D-1 is a solid ferrite toroid core designed for electromagnetic interference suppression. It utilizes Nickel Zinc (NiZn) material, which provides high resistivity and effective attenuation at higher frequencies compared to Manganese Zinc alternatives. The component features an outer diameter of 25.5 mm and operates reliably within a temperature range from -25°C to +85°C. It is rated for signal frequencies up to 300 MHz, making it suitable for broadband noise reduction applications in electronic circuits.

Feature Summary

• Constructed from Nickel Zinc ferrite material for high-frequency performance
• Solid toroidal geometry facilitates easy cable installation
• Optimized for electromagnetic interference suppression above 10 MHz

Applications

• Cable noise suppression for data lines
• Electromagnetic interference filtering in industrial equipment
• Signal integrity enhancement in communication systems

Procurement Notes

Verify the specific Nickel Zinc composition and 300 MHz frequency rating against project requirements. Confirm physical dimensions match the 25.5 mm specification. Ensure environmental ratings align with the operational temperature limits. Cross-reference datasheets for exact impedance characteristics if critical circuit performance depends on precise frequency response curves.

Selection Notes

Select this component when high-frequency noise attenuation is required, as Nickel Zinc offers superior performance over Manganese Zinc at frequencies exceeding 10 MHz. Consider the 25.5 mm inner diameter for cable fitment. Evaluate thermal constraints to ensure operation remains within the specified -25°C to +85°C range. Compare against other series like ESD-R-47SRH if lower frequency MnZn characteristics are needed instead.

Part Context

This part belongs to the KEMET ESD-R series of ferrite toroids. While similar models exist using Manganese Zinc materials, the D-1 suffix indicates a Nickel Zinc formulation. This distinction is critical for applications requiring effective suppression in the VHF/UHF bands rather than lower frequency power line filtering.

Replacement Considerations

Direct substitutes include other Nickel Zinc toroids with identical 25.5 mm dimensions. Verify that alternative parts maintain the 300 MHz frequency rating and +85°C maximum operating temperature. Generic MnZn cores may not provide equivalent high-frequency attenuation.