2843006802

Overview

Fair-Rite 2843006802 is a multi-aperture ferrite core utilizing Material 43. It features an oval geometry with internal dimensions of 3.8 mm inner diameter, 13.3 mm external width, and 7.5 mm external length. The component provides an impedance of 300 Ohms at a test frequency of 100 MHz. Its effective operating range spans from 20 MHz to 300 MHz. This core is designed for applications requiring controlled impedance in high-frequency environments.

Feature Summary

• Multi-aperture design allows simultaneous passage of multiple conductors through the magnetic path.
• Material 43 composition offers optimized performance characteristics for noise suppression within specific frequency bands.

Applications

• Suppression of electromagnetic interference on multi-conductor cables
• Common mode noise filtering in high-speed data interfaces
• Impedance control in RF signal transmission lines

Procurement Notes

Verify that the required impedance tolerance aligns with Material 43 specifications, as multi-aperture cores are primarily controlled for impedance rather than AL value. Confirm physical clearance requirements match the 13.3 mm by 7.5 mm external dimensions. Ensure the 3.8 mm internal aperture accommodates all intended conductors without exceeding fill limits.

Selection Notes

Select this part when multi-conductor routing through a single magnetic element is necessary. Material 43 is suitable for frequencies between 20 MHz and 300 MHz. Compare against solid cores if only single conductors are present, as multi-aperture designs may have different saturation characteristics. Validate that the 300 Ohm impedance at 100 MHz meets the target attenuation requirements.

Part Context

This component belongs to Fair-Rite's 28 series of multi-aperture ferrite cores. These cores are distinct from standard toroids by their ability to house multiple wires. Material 43 is a nickel-zinc formulation widely used for broadband noise suppression. The 2843006802 designation specifically identifies the size and material combination within this product line.

Replacement Considerations

Direct substitutes must share the same multi-aperture geometry and Material 43 composition. Verify that alternative parts maintain the 300 Ohm impedance at 100 MHz. Check dimensional compatibility for the 3.8 mm internal opening and overall footprint before substitution.

FAQ

Is the impedance of this core controlled for both magnitude and phase?

No, multi-aperture cores in Material 43 are controlled for impedance magnitude only. Unlike Material 61, they are not controlled for AL value.

What is the maximum frequency range for this core?

The specified frequency range for this core extends up to 300 MHz.