28B0669-000

Overview

The 28B0669-000 is a solid round ferrite core manufactured by Laird-Signal Integrity Products, designed for suppressing high-frequency noise and reducing electromagnetic interference (EMI) and radio frequency interference (RFI) on cables and wires. It features an impedance of 271 Ohms at 100 MHz. The component has an inner diameter of 0.276 inches (7.01 mm), an outer diameter of 0.669 inches (17.00 mm), and a length of 0.984 inches (25.00 mm). Constructed from material designated as 28, it is RoHS compliant.

Feature Summary

• Solid free-hanging design for easy installation around cables
• Effective suppression of high-frequency noise and EMI/RFI
• RoHS compliant construction

Applications

• Cable and wire noise suppression
• Electromagnetic interference reduction in wiring harnesses
• Radio frequency interference mitigation

Procurement Notes

Verify the specific impedance requirement of 271 Ohms at 100 MHz against your application's noise spectrum. Confirm that the physical dimensions, particularly the 0.276-inch inner diameter, accommodate the target cable size. Ensure compliance with RoHS standards if required by your manufacturing process. Check for any specific environmental ratings or material certifications provided in the official datasheet.

Selection Notes

Select this component when a non-split, solid ferrite core is needed for permanent cable treatment. The 271 Ohm impedance at 100 MHz suits general-purpose high-frequency noise filtering. Consider the 0.276-inch inner diameter to ensure a snug fit on the cable without excessive force. Compare with split-core alternatives if field installation over existing cables is necessary.

Part Context

This ferrite core belongs to Laird-Signal Integrity Products' range of passive components for signal integrity management. It complements their chip beads and inductors by providing a solution for bulk cable noise suppression rather than board-level filtering. The '28' material designation indicates the specific magnetic properties optimized for its frequency response.

Replacement Considerations

No direct substitute part numbers are documented in the provided source material. When replacing, match the impedance value (271 Ohms @ 100 MHz), inner diameter (0.276 inch), and material type (28) to maintain equivalent noise suppression performance.