28A0640-0A2

Overview

The Laird-Signal Integrity Products 28A0640-0A2 is a hinged, free-hanging ferrite core designed for cable EMI suppression. It features a circular design with a material composition of grade 28. The component provides an impedance of 240 Ohms at 100 MHz. Key dimensions include an inner diameter of 9.07 mm (0.357 inches) and outer dimensions of 21.57 mm width by 21.57 mm height (0.849" W x 0.790" H). The overall length is 32.50 mm (1.280 inches). It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Hinged snap-on design allows for easy installation on existing cables without disconnection.
• Grade 28 ferrite material optimized for high-frequency noise attenuation.
• Free-hanging configuration enables flexible mounting orientations.

Applications

• Electromagnetic interference reduction in electronic circuits
• Cable filtering for signal integrity enhancement
• Suppression of common mode noise on data lines

Procurement Notes

Verify the specific impedance value against official datasheets, as sources vary between 240 Ohms and 320 Ohms at 100 MHz. Confirm physical dimensions match application constraints due to reported variations in outer width and height across different listings. Ensure compliance with RoHS3 standards if required by the end product specifications.

Selection Notes

Select this component when a non-invasive, snap-on ferrite solution is required for cables up to 9.07 mm in diameter. The hinged design facilitates rapid deployment during assembly or retrofitting. Consider the operating temperature range of -40°C to +125°C for environmental suitability. Verify the exact impedance requirement at 100 MHz to ensure adequate noise suppression performance.

Part Context

This part belongs to the 28A series of cable ferrites from Laird-Signal Integrity Products. The series offers various sizes and impedances tailored for different cable diameters and frequency ranges. The 28A0640-0A2 specifically targets mid-range cable diameters with a focus on high-frequency noise control using grade 28 material properties.

Replacement Considerations

Direct substitutes may include other Laird 28A series parts with similar inner diameters and hinged designs. Verify impedance matching and physical fit before replacement. Cross-referencing with generic grade 28 hinged ferrites requires careful dimension and impedance validation.