RA28B4340

Overview

The RA28B4340 is a hinged ferrite clamp-on core manufactured by LeaderTech, designed for flat ribbon cable applications. It features a core material designation of 28 and provides an impedance of 325 Ohms. The component has an internal length of 82.3 mm and an internal height of 2.6 mm. The external dimensions include a width of approximately 28.6 mm and a height of 17 mm. This fully enclosed design allows for easy installation around existing cables without disconnection.

Feature Summary

• Hinged two-piece construction enables rapid installation on terminated flat ribbon cables
• Fully enclosed ferrite core structure ensures complete electromagnetic interference containment
• Adhesive-backed mounting option available for secure attachment to chassis or surfaces

Applications

• Suppression of common mode noise in high-speed data transmission lines
• EMI mitigation for parallel interface cables such as SCSI or IEEE-488
• Shielding of flat ribbon cables within computer peripheral connections

Procurement Notes

Verify the specific adhesive configuration required for your assembly process, as variants exist with and without pre-applied bonding agents. Confirm that the internal clearance accommodates the total thickness of the target flat ribbon cable bundle. Ensure the selected part number matches the required impedance profile for the operating frequency range. Cross-reference the physical dimensions against the enclosure space constraints to guarantee proper fitment during integration.

Selection Notes

Select this component when dealing with flat ribbon cables requiring immediate post-assembly noise reduction. The hinged design is preferable over split-core types for higher mechanical stability. Consider the core material grade 28 characteristics for broadband attenuation needs. Evaluate the need for adhesive backing versus free-standing mounting based on vibration exposure and maintenance access requirements in the final product environment.

Part Context

This part belongs to LeaderTech's series of ferrite clamp-on cores specifically engineered for EMI suppression. These components are widely used in electronic interconnects to mitigate radiated emissions. The manufacturer specializes in shielding solutions for circuit boards and enclosures, providing standardized sizes for common cable geometries.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic equivalent ferrite cores by matching internal dimensions and impedance values at the target frequency.