28B1142-100

Overview

The 28B1142-100 is a solid, free-hanging ferrite core manufactured by Laird-Signal Integrity Products. It provides electromagnetic interference (EMI) and radio frequency interference (RFI) suppression for cables. The component features an impedance of 114 Ohms at 100 MHz. Its physical dimensions include an inner diameter of 2.00 mm, an outer diameter of 4.00 mm, and a length of 19.00 mm. The core utilizes material composition designated as type 28.

Feature Summary

• Solid construction designed for direct cable installation without additional housing
• Provides effective attenuation of high-frequency noise on signal and power lines
• Free-hanging design allows for easy placement around existing wire harnesses

Applications

• Suppression of EMI/RFI on data communication cables
• Noise filtering on power supply wiring in electronic equipment
• Cable assembly integration for compliance with electromagnetic compatibility standards

Procurement Notes

Verify the specific impedance value at 100 MHz against the official datasheet to ensure compatibility with target noise frequencies. Confirm that the inner diameter accommodates the cable bundle thickness without excessive force. Check RoHS3 compliance status if required by project specifications. Ensure the solid core design meets mechanical clearance requirements within the final enclosure.

Selection Notes

Select this component when a non-split, solid ferrite core is required for permanent cable treatment. The 2.00 mm inner diameter limits usage to smaller gauge wires or tightly bundled cables. Compare the 114 Ohm impedance profile against alternative materials if higher or lower attenuation is needed at specific frequencies. Consider the 19 mm length for available space along the cable run.

Part Context

This part belongs to the 28B series of ferrite cores from Laird-Signal Integrity Products. These components are engineered for general-purpose EMI suppression. The series offers various sizes and impedance values to suit different cable diameters and noise environments. The 28B1142-100 represents a specific size and impedance combination within this broader product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative solid ferrite cores based on matching inner diameter, outer diameter, length, and impedance characteristics at the operating frequency.