461178281

Overview

Fair-Rite Products Corp. part number 461178281 is a hinged snap-on ferrite core designed for cable electromagnetic interference suppression. It utilizes Fair-Rite Material 31, providing an impedance of 180 ohms at 100 MHz. The component features a round shape with an inner diameter of 8.99 mm (0.354 inches). External dimensions are 21.49 mm in width, 10.54 mm in height, and 39.37 mm in length. It is classified as a free-hanging assembly controlled for impedance.

Feature Summary

• Hinged snap-on design allows installation around existing cables without disconnection
• Material 31 composition optimized for high-frequency noise suppression
• Round cross-section geometry suitable for circular wire harnesses

Applications

• Electromagnetic interference suppression on signal cables
• Noise filtering in electronic equipment wiring
• Common-mode choke applications for data lines

Procurement Notes

Verify the specific impedance value against the manufacturer datasheet, as distributor listings may vary between 180 ohms and 250 ohms depending on material revisions. Confirm the inner diameter matches the target cable size of 8.99 mm to ensure proper fitment. Check RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a non-invasive solution for cable noise reduction is required. Material 31 is appropriate for frequencies above 10 MHz. Ensure the cable diameter does not exceed the 8.99 mm inner opening. Consider the physical length of 39.37 mm for available space constraints within the enclosure.

Part Context

This part belongs to the Snap-It series of openable ferrite cores manufactured by Fair-Rite. These assemblies are distinct from solid toroids or clip-it cores due to their hinged mechanism. They are engineered specifically for retrofitting noise suppression onto finished cable assemblies where traditional bead installation is impractical.

Replacement Considerations

Part 0431178281 is a similar hinged core but utilizes Material 31 with a higher impedance rating of 250 ohms at 100 MHz. Verify if the increased impedance meets the circuit requirements before substitution.