28B1020-300

Overview

The Laird-Signal Integrity Products 28B1020-300 is a solid, free-hanging ferrite core designed for cable noise suppression. It features a tubular geometry with an inner diameter of 0.505 inches (12.83 mm) and an outer diameter of 1.020 inches (25.91 mm). The component has a length of 1.125 inches (28.58 mm) and provides an impedance of 276 Ohms at 100 MHz. Constructed from material grade 28, it is suitable for high-frequency EMI reduction on cables passing through its center.

Feature Summary

• Solid construction eliminates the need for assembly hardware
• Free-hanging design allows easy installation on existing cables
• High impedance performance at 100 MHz for effective noise attenuation

Applications

• Suppression of electromagnetic interference on power cables
• Noise filtering for signal transmission lines
• EMI reduction in industrial equipment cabling

Procurement Notes

Verify the specific impedance requirement matches the application frequency spectrum. Confirm that the cable diameter falls within the 12.83 mm inner diameter tolerance to ensure proper fit. Check RoHS3 compliance status if required by regional regulations. Ensure the solid design meets mechanical constraints compared to split-core alternatives.

Selection Notes

Select this model when a permanent, non-split ferrite solution is required for cables up to 12.83 mm in diameter. The 276 Ohm impedance at 100 MHz indicates suitability for higher frequency noise profiles compared to lower impedance variants. Consider the fixed inner diameter as a critical constraint during cable selection.

Part Context

This component belongs to the 28B series of ferrite cores from Laird-Signal Integrity Products. The series offers various dimensions and impedance values tailored for different cable sizes and frequency ranges. The 28B1020-300 specifically addresses applications requiring larger bore sizes with significant high-frequency attenuation capabilities.

Replacement Considerations

Direct substitutes must match the 12.83 mm inner diameter and 276 Ohm @ 100 MHz impedance. Verify material composition compatibility for similar frequency response characteristics.