28R0825-000

Overview

The Laird-Signal Integrity Products 28R0825-000 is a solid ferrite cable core designed for electromagnetic interference suppression. It features an impedance of 190 Ohms at a test frequency of 100 MHz and utilizes material grade 28. The component has internal dimensions of 14.00 mm width by 0.80 mm height, with external dimensions of 0.825 inches width by 0.305 inches height. It operates within a temperature range of -40°C to +125°C and is supplied in bulk packaging.

Feature Summary

• Solid construction provides durable mechanical support for flat ribbon cables.
• Material grade 28 composition offers specific high-frequency attenuation characteristics.
• Free-hanging design allows for easy installation on existing cable assemblies without modification.

Applications

• Suppression of common-mode noise on flat ribbon cables
• EMI filtering in digital signal transmission lines
• Signal integrity enhancement in computer peripheral connections

Procurement Notes

Verify the exact impedance value of 190 Ohms at 100 MHz against your specific frequency requirements. Confirm that the internal slot dimensions (14.00 mm x 0.80 mm) accommodate the target cable thickness. Ensure the operating temperature range of -40°C to +125°C meets environmental conditions. Check RoHS compliance status as specified in the official datasheet before finalizing procurement.

Selection Notes

Select this component when a solid, non-split ferrite core is required for permanent attachment to ribbon cables. The 190 Ohm impedance at 100 MHz makes it suitable for general-purpose EMI suppression in digital circuits. Consider the physical size constraints, as the external dimensions are larger than split-core alternatives. Material grade 28 is appropriate for frequencies above 10 MHz where higher permeability materials may saturate or lose effectiveness.

Part Context

This part belongs to the 28R series of ferrite cable cores manufactured by Laird-Signal Integrity Products. These components are engineered for signal integrity applications requiring robust noise reduction. The series includes various impedance values and physical sizes to match different cable geometries and frequency spectra. The 28R designation indicates the specific product line configuration within the manufacturer's portfolio.

Replacement Considerations

Direct substitutes must match the 190 Ohm impedance at 100 MHz and identical internal dimensions of 14.00 mm x 0.80 mm. Verify that alternative parts use material grade 28 or equivalent performance characteristics. Ensure the replacement maintains the same operating temperature range and mounting style. Cross-reference with Laird's official substitution guides for validated equivalents.

FAQ

What is the impedance of the 28R0825-000 at its test frequency?

The impedance is 190 Ohms at a test frequency of 100 MHz.

What material is used for the ferrite core in this component?

The core is made from material grade 28.

What are the internal dimensions of the cable slot?

The internal dimensions are 14.00 mm in width and 0.80 mm in height.