444178281

Overview

Fair-Rite Products Corp. part number 444178281 is a Snap-It™ hinged ferrite core designed for cable electromagnetic interference suppression. It utilizes Fair-Rite Material 31, which provides high permeability suitable for low-frequency noise attenuation. The component features a circular snap-fit design with an internal diameter of 0.354 inches (8.99 mm). It exhibits an impedance of 250 ohms at 100 MHz. The external dimensions are 0.846 inches wide by 0.415 inches high, with a length of 1.550 inches (39.37 mm). The unit operates within a temperature range of -55°C to +125°C and is supplied in bulk packaging.

Feature Summary

• Snap-It™ hinged design allows for easy installation onto existing cables without disconnection
• Material 31 composition optimized for high permeability and low-frequency noise absorption
• Circular cross-section accommodates round cables securely within the specified bore size

Applications

• Electromagnetic interference suppression on power and signal cables
• Noise filtering in electronic equipment wiring harnesses
• Retroactive EMI mitigation on installed cable assemblies

Procurement Notes

Verify that the required cable diameter falls within the 8.99 mm internal specification before ordering. Confirm that Material 31 characteristics align with the target frequency range of the application. Check RoHS compliance status if restricted substances are mandated. Ensure the Snap-It hinge mechanism is compatible with the physical constraints of the assembly environment.

Selection Notes

Select this component when retrofitting cables with existing installations where split-core accessibility is required. Material 31 is preferred over other compositions for applications dominated by lower frequency noise profiles. Compare impedance requirements against alternative materials if higher frequency performance is necessary. Ensure the physical envelope fits within the available space around the cable bundle.

Part Context

This component belongs to the Snap-It™ series of hinged ferrite cores manufactured by Fair-Rite Products Corp. The series is engineered for convenient field installation on pre-existing cabling. Part 444178281 specifically denotes the configuration using Material 31 with the standard circular housing dimensions associated with the 0.354-inch bore size within this product line.

Replacement Considerations

Direct substitutes include other Snap-It™ cores with identical dimensions but different materials, such as those using Material 43 or 61, depending on the specific frequency response required. Verify that any replacement maintains the same internal diameter and external footprint to ensure mechanical compatibility.

FAQ

What is the primary material composition of part 444178281?

The core is constructed from Fair-Rite Material 31, which is characterized by high initial permeability.

How does the Snap-It design facilitate installation?

The hinged construction allows the core to be opened and snapped shut around a cable, eliminating the need to disconnect or thread the cable through a solid core.