28R1457-400

Overview

The 28R1457-400 is a solid, free-hanging ferrite core manufactured by Laird-Signal Integrity Products. It utilizes Material 28 to provide broadband EMI filtering for cables and wires. The component exhibits an impedance of 140 Ohms at 100MHz. Its physical dimensions include an outer width of 1.457 inches (37.01mm), an outer height of 0.177 inches (4.50mm), and a length of 0.530 inches (13.46mm). The inner aperture measures 1.299 inches in width by 0.020 inches in height (33.00mm x 0.51mm). It operates within a temperature range of -40°C to 125°C.

Feature Summary

• Solid construction designed for free-hanging installation on cables
• Material 28 composition provides effective broadband noise suppression
• High current capacity due to large aperture geometry

Applications

• Suppression of unintended signals on cables or wires
• Broadband EMI filtering for high-current conductors
• Noise reduction on power lines and signal cables

Procurement Notes

Verify the specific impedance value required for your application against the datasheet, as variants exist within the series. Confirm that the cable diameter fits within the 33.00mm x 0.51mm inner aperture. Ensure the operating environment stays within the specified -40°C to 125°C range. Check for RoHS3 compliance if required by your manufacturing standards. Validate the part number suffix to ensure correct material and dimensional specifications.

Selection Notes

Select this component when dealing with thick cables that require a large aperture for fitment. The Material 28 formulation is suitable for general-purpose broadband attenuation. Consider the physical size constraints of the assembly, as the core is relatively large compared to standard snap-on types. Ensure the mounting method allows for secure free-hanging attachment without mechanical stress on the cable insulation.

Part Context

This part belongs to the 28R series of rectangular ferrite cores from Laird-Signal Integrity Products. These components are distinct from split-core designs, offering a solid structure that must be threaded onto cables during assembly. The series is engineered for robust signal integrity protection in industrial and commercial electronic systems.

Replacement Considerations

Public confirmed substitute: None identified.