ESD-SR-250G

Overview

The KEMET ESD-SR-250G is a snap-on ferrite core designed for electromagnetic interference (EMI) suppression. It features a nickel-zinc material composition and a hinged design for easy installation on round cables. The component has an inner diameter of 13 mm, with external dimensions of 31.5 mm width, 31.6 mm height, and 38 mm length. It exhibits an impedance of 321 Ω at 100 MHz and 176 Ω at 25 MHz. The device operates within a temperature range up to +85°C and complies with RoHS standards.

Feature Summary

• Hinged snap-on design allows for quick installation on existing cable assemblies without disconnection.
• Nickel-zinc ferrite material provides effective high-frequency noise attenuation.
• Free-hanging mounting style offers flexible integration into various electronic enclosures.

Applications

• Suppression of electromagnetic interference in consumer electronics
• Noise filtering on signal and power cables in industrial equipment
• Common mode choke applications for data transmission lines

Procurement Notes

Verify the specific suffix 'G' against the manufacturer's current datasheet to confirm if it denotes a specific packaging variant or compliance update distinct from the base ESD-SR-250 model. Ensure the ordered part matches the required impedance characteristics and physical dimensions for your application. Confirm RoHS compliance status directly with the supplier documentation prior to procurement.

Selection Notes

Select this component when a split-core ferrite is required for retrofitting or testing environments where permanent attachment is not feasible. The 13 mm inner diameter accommodates cables of corresponding thickness. Consider the impedance profile at your operating frequency to ensure adequate noise suppression. Verify that the free-hanging mechanical constraints fit within the available space of the target assembly.

Part Context

The ESD-SR series comprises commercial-grade snap-on ferrite cores manufactured by KEMET. These components are engineered for general-purpose EMI suppression in electronic circuits. The series utilizes nickel-zinc ferrite materials suitable for frequencies typically encountered in digital and communication systems. They serve as passive filters to reduce radiated and conducted emissions.

Replacement Considerations

The base model ESD-SR-250 shares identical physical dimensions and core material specifications. Verify if the 'G' suffix indicates a specific packaging or regulatory variation rather than a functional difference before substituting.