28B0384-200

Overview

The Laird-Signal Integrity Products 28B0384-200 is a solid, free-hanging ferrite core designed for cable EMI suppression. It utilizes Material 28 to provide an impedance of 322 Ohms at 100 MHz. The component features a circular geometry with an inner diameter of 3.80 mm (0.150 inches), an outer diameter of 9.75 mm (0.384 inches), and a length of 25.00 mm (0.984 inches). It is classified as a cable ferrite filter intended for through-hole or manual installation on wires.

Feature Summary

• Solid construction provides consistent magnetic properties without split halves
• Material 28 formulation optimized for high-frequency noise attenuation
• Free-hanging design allows easy sliding onto cables during assembly

Applications

• Suppression of electromagnetic interference on single power cables
• Noise filtering for signal lines in electronic equipment
• Common mode choke applications for wire harnesses

Procurement Notes

Verify the specific impedance requirement matches the target frequency spectrum, as Material 28 performance varies across bands. Confirm that the cable diameter falls within the 3.80 mm inner diameter tolerance to ensure a secure fit. Check RoHS3 compliance status if required by regional regulations. Ensure the solid core design is suitable for the assembly process, as it cannot be opened once placed on the cable.

Selection Notes

Select this component when a fixed, non-split ferrite core is preferred over clamshell types for permanent installations. The 322 Ohm impedance at 100 MHz indicates suitability for higher frequency noise profiles compared to lower impedance variants. Consider the physical dimensions to ensure adequate clearance around the cable bundle. Material 28 is distinct from other Laird materials, so verify compatibility with the specific noise frequencies present in the application.

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. Unlike the 28C series which are axial beads, or HI series which are surface mount chips, this 28B variant is specifically engineered for direct cable mounting. It serves as a passive component for enhancing signal integrity by dissipating high-frequency noise energy as heat.

Replacement Considerations

Fair-Rite 2643801902 is listed as a similar substitute. Verify dimensional compatibility and impedance curves before substitution, as material formulations may differ.