28B0355-000

Overview

The 28B0355-000 is a solid, free-hanging ferrite core manufactured by Laird-Signal Integrity Products. It belongs to the 28B series and utilizes Material 28 for electromagnetic interference suppression. The component provides an impedance of 205 Ohms at 100 MHz. Its physical dimensions include an inner diameter of 4.75 mm (0.187 inches), an outer diameter of 9.00 mm (0.354 inches), and a length of 20.00 mm (0.787 inches).

Feature Summary

• Solid cylindrical construction designed for cable wrapping.
• Free-hanging mounting type allows installation on existing wiring harnesses.
• Material 28 composition optimized for high-frequency noise attenuation.

Applications

• Suppression of common-mode noise on data cables.
• EMI filtering for power supply lines.
• Signal integrity enhancement in communication interfaces.

Procurement Notes

Verify that the required impedance specification matches the application's frequency range, as this unit is rated at 205 Ohms at 100 MHz. Confirm the cable diameter fits within the 4.75 mm inner dimension before ordering. Check current RoHS compliance status with the supplier, as regulatory updates may affect specific production batches.

Selection Notes

Select this component when a fixed-geometry ferrite core is preferred over split-core designs for permanent installations. Ensure the target cable diameter does not exceed the 4.75 mm bore size. Consider the 20.00 mm length for available space constraints along the wire run compared to shorter variants in the same series.

Part Context

This part is part of Laird’s 28B series of solid ferrite cores. It serves as a passive EMI suppression device. Unlike surface-mount beads, this component is designed to be slipped onto wires. It complements other Laird signal integrity products by providing bulk noise reduction for cables where space permits a larger cylindrical form factor.

Replacement Considerations

Direct substitutes within the same series include parts with similar impedance but different dimensions, such as the 28B0390-000 or 28B0395-000. Verify that any replacement maintains the 4.75 mm minimum inner diameter requirement for the specific cable being treated.