2843002302

Overview

Fair-Rite 2843002302 is a multi-aperture ferrite toroid core utilizing Material 43. It features an inner diameter of 0.75 mm (0.030 inches) and an outer diameter of 2.00 mm (0.079 inches). The component has a length of 3.45 mm and weighs approximately 100 mg. Electrical characteristics include an impedance of 29 Ohms at 25 MHz and 46 Ohms at 100 MHz. The product is RoHS compliant and packaged in bulk quantities.

Feature Summary

• Multi-aperture design for simultaneous cable passage
• Material 43 composition for high-frequency noise suppression
• Compact dimensions suitable for dense circuit layouts

Applications

• Electromagnetic interference suppression on small gauge cables
• Common mode choke applications in high-density electronics
• Signal integrity enhancement in data transmission lines

Procurement Notes

Verify the specific impedance requirements against your operating frequency, as Material 43 performance varies significantly across the spectrum. Confirm that the 0.75 mm inner diameter accommodates the target cable bundle without excessive friction or damage. Ensure the bulk packaging format aligns with your assembly line handling capabilities and storage conditions.

Selection Notes

Select this part when space constraints require a low-profile solution for multiple conductors. Material 43 is optimal for frequencies between 10 MHz and several hundred MHz. Compare the 29 Ohm @ 25 MHz specification against competitors to ensure adequate attenuation for your specific noise profile. Consider thermal limits if high current carrying cables are involved.

Part Context

This component belongs to Fair-Rite's Series 28 multi-hole cores. These cores are distinct from single-hole snap-ons by allowing multiple wires to pass through a single magnetic path simultaneously. They are widely used in telecommunications and computer peripherals where compact EMI filtering is critical for regulatory compliance.

Replacement Considerations

Direct substitutes must match the 0.75 mm ID, 2.00 mm OD, and 3.45 mm length. Verify that alternative materials offer comparable permeability and impedance curves at 25 MHz and 100 MHz. Physical fitment checks are essential due to tight tolerances in multi-aperture designs.