444173551

Overview

Fair-Rite 444173551 is a solid, free-hanging ferrite core designed for electromagnetic interference suppression. It utilizes Material 43 and Material 44 compositions to provide high impedance characteristics at radio frequencies. The component features an inner diameter of 0.740 inches (18.80 mm) and an outer dimension of 1.150 inches by 0.579 inches (29.21 mm x 14.71 mm). Its length measures approximately 0.579 inches. The core exhibits an impedance of 195 ohms at 100 MHz, making it suitable for filtering applications involving round cables or bundled wires with diameters ranging from 2.5 mm to 25.4 mm.

Feature Summary

• Snap-It design allows easy installation around existing cables without disconnection
• Utilizes Material 43 and Material 44 for effective high-frequency noise suppression
• Solid construction provides consistent impedance control across specified frequency ranges

Applications

• Suppression of electromagnetic interference in embedded systems
• Filtering noise on industrial automation wiring harnesses
• EMI reduction for round cables and bundled wire assemblies

Procurement Notes

Verify the specific material composition required for your application, as this part may utilize Material 43 or Material 44 depending on the exact manufacturing batch or variant. Confirm that the inner diameter accommodates the target cable bundle size within the 2.5 mm to 25.4 mm range. Ensure compliance with RoHS3 standards if applicable to your project requirements. Cross-reference the DigiKey number 1934-1492-ND for accurate sourcing details.

Selection Notes

Select this component when dealing with larger diameter cables or bundles that exceed the capacity of smaller snap-it cores. The 195 ohm impedance at 100 MHz indicates suitability for higher frequency noise environments compared to lower impedance alternatives. Consider the physical dimensions to ensure adequate clearance in the assembly layout. Material selection between 43 and 44 should be based on the specific frequency spectrum of the interference being mitigated.

Part Context

This ferrite core belongs to Fair-Rite's Round Cable Snap-It series, which are controlled for impedance values rather than strict dimensional tolerances. These components are distinct from split-core designs as they are solid but feature a gap allowing them to snap onto cables. They serve as passive filters to attenuate common-mode noise on data and power lines in electronic equipment.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Alternative solutions may require evaluating other Fair-Rite Snap-It cores with similar inner diameters and impedance ratings, ensuring the replacement matches the required cable bundle size and frequency performance characteristics.