28B0434-000

Overview

The 28B0434-000 is a solid, free-hanging cylindrical ferrite core manufactured by Laird-Signal Integrity Products. Constructed from ultra-thin mixtures of iron, nickel, and zinc oxides, this component is designed for cable suppression applications. It features an inner diameter of 5.10 mm (0.201 inches) and an outer diameter of 11.00 mm (0.433 inches). The core has a total length of 32.00 mm (1.260 inches). Electrical specifications indicate an impedance of 349 ohms at frequencies ranging from 30 MHz to 500 MHz.

Feature Summary

• Solid cylindrical design constructed from specialized iron, nickel, and zinc oxide mixtures
• Free-hanging mounting style suitable for direct cable installation without hardware
• Broadband frequency performance covering the 30 MHz to 500 MHz range

Applications

• Cable electromagnetic interference suppression
• Signal integrity enhancement for high-frequency data lines
• Common mode noise reduction on external connectors

Procurement Notes

Verify the specific impedance value required for your application against the datasheet, as sources cite varying ratings such as 133 ohms or 349 ohms depending on test conditions. Confirm that the 5.10 mm inner diameter accommodates the target cable bundle size. Ensure the solid construction meets the mechanical constraints of the assembly, as split-core alternatives exist within the same product family.

Selection Notes

Select this part when a non-intrusive, solid ferrite solution is needed for cables with diameters up to 5.10 mm. The free-hanging design simplifies integration compared to snap-fit or split-core variants. Consider the 32 mm length for adequate attenuation in space-constrained environments. Evaluate the material composition's suitability for the operating temperature range if extreme conditions are expected.

Part Context

This component belongs to the 28x series of ferrite cable cores from Laird-Signal Integrity Products. These cores utilize proprietary thin-film oxide mixtures to achieve high permeability and effective noise suppression across wide bandwidths. The series includes various geometries such as cylinders, ribbons, and split-flats to address different cabling requirements.

Replacement Considerations

Split-core versions like the 28B series may be considered if field installation on terminated cables is required. Verify that substitute parts maintain compatible inner diameter dimensions and impedance characteristics at the target frequencies.