28B0390-200

Overview

The 28B0390-200 is a solid cable ferrite core manufactured by Laird-Signal Integrity Products. It utilizes Material 28 to provide electromagnetic interference suppression with an impedance of 128 Ohms at 100 MHz. The component features a circular design with free-hanging installation, suitable for wrapping around cables. Physical dimensions include an inner diameter of 6.35 mm, an outer diameter of 9.91 mm, and a length of approximately 10 mm.

Feature Summary

• Solid construction designed for easy installation on cables
• Material 28 composition optimized for high-frequency noise attenuation
• Free-hanging form factor allows flexible placement along wire harnesses

Applications

• Suppression of common mode noise in data communication lines
• EMI filtering for power supply cables in electronic equipment
• Noise reduction in automotive wiring harnesses

Procurement Notes

Verify the specific material grade and impedance tolerance against the official Laird datasheet before integration. Confirm that the inner diameter accommodates the target cable bundle without excessive strain. Ensure compliance with RoHS directives if required by the end product specifications.

Selection Notes

Select this component when a solid core is preferred over split cores for permanent installations. The 128 Ohm impedance at 100 MHz suits applications targeting higher frequency noise profiles. Consider the physical size constraints relative to the cable diameter and available space within the device enclosure.

Part Context

This part belongs to the 28B series of cable ferrites from Laird-Signal Integrity Products. The series offers various sizes and impedances using Material 28, a standard formulation for broadband EMI suppression. These components are widely used in signal integrity solutions across industrial and consumer electronics sectors.

Replacement Considerations

Direct substitutes may include other Material 28 solid ferrites with similar impedance and dimensional tolerances. Verify compatibility with existing cable diameters and mounting requirements when considering alternative manufacturers.