2631540202

Overview

The Fair-Rite 2631540202 is a solid round cable ferrite core designed for electromagnetic interference (EMI) suppression. It utilizes Material 31, providing guaranteed minimum impedance specifications across the 1 MHz to 300 MHz frequency range. The component features an inner diameter of 6.35 mm (0.250 inches), an outer diameter of 14.28 mm (0.562 inches), and an external length of 13.46 mm (0.530 inches). It delivers a minimum impedance of 140 ohms at 100 MHz. This free-hanging core is RoHS compliant as of January 1, 2005.

Feature Summary

• Solid cylindrical construction for direct cable clamping without split halves
• Material 31 composition optimized for high-frequency noise attenuation
• Guaranteed minimum impedance values specified for reliable EMI performance

Applications

• Suppression of common mode noise on cables in amateur radio equipment
• EMI reduction on data and power lines within electronic assemblies
• Shield bead application for high-frequency signal integrity maintenance

Procurement Notes

Verify current manufacturing status directly with Fair-Rite or authorized distributors, as lifecycle information may vary. Confirm that the specific order matches the Material 31 grade and dimensional tolerances required for your cable assembly. Ensure compliance with relevant environmental regulations if operating in restricted jurisdictions.

Selection Notes

Select this part when a solid, non-split ferrite core is required for cables fitting within a 6.35 mm inner diameter. Material 31 is appropriate for applications targeting noise frequencies between 1 MHz and 300 MHz. Verify that the 140 ohm impedance at 100 MHz meets the specific attenuation requirements of the target circuit.

Part Context

This component belongs to the Fair-Rite 26 series of round cable cores. These cores are distinct from split-bead designs, offering a continuous magnetic path around the cable. They are commonly used in conjunction with other EMI mitigation strategies to ensure compliance with electromagnetic compatibility standards.

Replacement Considerations

No officially confirmed substitute part numbers are publicly documented for this specific configuration. Alternative solutions require matching the inner diameter, material grade (31), and impedance characteristics independently.