2643801802

Overview

Fair-Rite 2643801802 is a solid round cable ferrite core designed for electromagnetic interference suppression. It utilizes Fair-Rite Material 43, providing effective noise attenuation in the high-frequency range of 25 MHz to 300 MHz. The component features an inner diameter of 13.72 mm (0.540 inches), an outer diameter of 22.10 mm (0.870 inches), and a length of 6.35 mm (0.250 inches). It guarantees a minimum impedance of 45 Ohms at 100 MHz. This free-hanging core is RoHS compliant and suitable for direct cable installation without additional mounting hardware.

Feature Summary

• Solid round geometry allows for easy sliding onto cables during assembly or retrofitting
• Material 43 composition provides optimized magnetic permeability for high-frequency noise suppression
• Free-hanging design eliminates the need for separate mounting brackets or adhesives
• Guaranteed impedance specification ensures consistent performance across production batches

Applications

• Suppression of common-mode noise on power supply cables
• EMI reduction on data transmission lines operating above 25 MHz
• Noise filtering on internal wiring within electronic enclosures
• Retrofitting existing cable assemblies for regulatory compliance

Procurement Notes

Verify that the target cable diameter falls within the 13.72 mm inner diameter tolerance to ensure proper fit. Confirm that the application frequency spectrum aligns with the Material 43 performance curve, specifically between 25 MHz and 300 MHz. Check for RoHS compliance requirements if the end product is destined for restricted substance regulated markets. Ensure storage conditions prevent physical damage to the ceramic material prior to installation.

Selection Notes

Select this part when a solid, non-split core is required for permanent cable installations where disassembly is not anticipated. Material 43 is preferred over other compositions for applications dominated by higher frequency noise components. Compare dimensions against available space constraints, noting the 22.10 mm outer diameter. Consider split-core alternatives only if the cable must be connected after the core is already in place, as this model requires pre-installation.

Part Context

This component belongs to the Fair-Rite 26 series of round cable cores, which are standardized solid ferrite beads. The 2643801802 designation specifically identifies the Material 43 formulation with the stated dimensional profile. It is distinct from multi-aperture rings or split-core variants within the broader ferrite catalog. The series is widely used in industrial and commercial electronics for passive EMI mitigation.

Replacement Considerations

Würth Elektronik part number 782114133064 is documented as a parameter-equivalent substitute. Both parts share identical Material 43 characteristics, 45 Ohm impedance at 100 MHz, and matching physical dimensions including the 13.80 mm inner diameter and 6.40 mm length. Verify mechanical fit tolerances before substitution.