28B1225-100

Overview

The 28B1225-100 is a solid, free-hanging cable ferrite core manufactured by Laird-Signal Integrity Products. It belongs to the 28B series and utilizes material composition 28 for electromagnetic interference suppression. The component provides an impedance of 93 ohms at 100 MHz. Its physical dimensions include an inner diameter of 0.750 inches (19.05 mm), an outer diameter of 1.225 inches (31.12 mm), and a length of 0.312 inches (7.92 mm). The part is RoHS3 compliant and classified under ECCN EAR99.

Feature Summary

• Solid construction designed for free-hanging installation on cables
• Utilizes material 28 composition for high-frequency noise attenuation
• Provides specific impedance characteristics for EMI/RFI filtering

Applications

• Suppression of high-frequency electromagnetic interference on wiring
• Radio frequency interference mitigation in electronic assemblies
• Cable filtering for signal integrity preservation

Procurement Notes

Verify the exact impedance value against the latest manufacturer datasheet, as sources indicate variations between 93 ohms and other ratings. Confirm the precise length dimension, as documentation lists both 0.312 inches and 0.394 inches. Ensure the selected variant matches the required inner diameter of 0.750 inches for the target cable assembly. Check current availability status as distribution data may vary.

Selection Notes

Select this component when a solid, non-split ferrite core is required for cables with a 19.05 mm inner diameter. The material 28 composition is suitable for applications targeting noise suppression around the 100 MHz frequency range. Consider the free-hanging design for ease of installation without additional mounting hardware. Verify that the 93 ohm impedance aligns with the circuit's filtering requirements.

Part Context

This component is part of the 28B series of cable ferrites from Laird-Signal Integrity Products. These cores are engineered for general-purpose electromagnetic interference filtering. The series offers various sizes and impedance values to accommodate different cable diameters and frequency requirements. Material 28 is a standard formulation for broadband noise suppression in electronic environments.

Replacement Considerations

The 28B1225-300 is a related part within the same series but features a higher impedance of 110 ohms at 100 MHz. Substitution requires verification that the increased impedance does not adversely affect the system's performance or thermal characteristics. Physical dimensions remain consistent regarding inner and outer diameters.