28B1250-00G

Overview

The 28B1250-00G is a solid round ferrite core manufactured by Laird-Signal Integrity Products, designed for electromagnetic interference suppression. It exhibits an impedance of 186 Ohms at 100 MHz and belongs to the 28 series utilizing material composition 28. The component features a circular geometry with an internal diameter of 0.125 inches (3.17 mm), an external diameter of 0.250 inches (6.35 mm), and a length of 0.500 inches (12.70 mm). It supports free-hanging installation and complies with RoHS3 standards.

Feature Summary

• Solid construction provides durable physical integrity for cable wrapping applications
• Material 28 formulation delivers high impedance characteristics for effective noise attenuation
• Free-hanging design allows flexible integration onto various wire gauges

Applications

• Suppression of common-mode noise on power cables
• Filtering of differential-mode interference in signal lines
• EMI reduction in automotive wiring harnesses
• Noise control in industrial equipment cabling

Procurement Notes

Verify the specific impedance value required for your application, as datasheets may list variations such as 121 Ohms or 186 Ohms depending on the exact suffix or revision. Confirm that the internal diameter accommodates the target cable bundle size without excessive friction. Ensure compliance with RoHS3 regulations if operating in restricted substance environments. Check for any specific packaging requirements from the distributor.

Selection Notes

Select this component when a robust, non-split ferrite core is needed for permanent cable treatment. The 0.125-inch inner diameter suits moderate gauge wires. Consider the 186 Ohm impedance rating at 100 MHz for broadband noise suppression. Evaluate the physical dimensions against available space constraints in the assembly. Compare against split-core alternatives if retrofitting existing installed cables is necessary.

Part Context

This part belongs to the Laird 28 series of ferrite cores, which are engineered for general-purpose EMI suppression. The series utilizes Material 28, optimized for high-frequency noise absorption. These components are widely used in consumer electronics, automotive, and industrial sectors to meet regulatory emissions standards. The solid design distinguishes it from clamshell types, offering superior mechanical stability.

Replacement Considerations

The 28B1250-000 is a closely related variant within the same series. Verify dimensional compatibility and impedance specifications before substitution. Ensure the replacement maintains the required RoHS3 compliance status.