28B0870-000

Overview

The Laird-Signal Integrity Products 28B0870-000 is a solid round ferrite cable core designed for electromagnetic interference suppression. It features an impedance of 85 ohms at a test frequency of 100 MHz. The component has an inner diameter of 13.72 mm, an outer diameter of 22.1 mm, and an external length of 6.35 mm. Constructed from material grade 28, it is suitable for free-hanging installation on cables.

Feature Summary

• Solid round design for uniform magnetic flux distribution around the cable
• High impedance performance at 100 MHz for effective noise attenuation
• Material grade 28 composition optimized for specific frequency filtering

Applications

• Suppression of common mode noise on power cables
• Filtering high-frequency interference on data transmission lines
• EMI reduction in industrial equipment wiring harnesses

Procurement Notes

Verify the exact impedance value of 85 ohms at 100 MHz against your system requirements. Confirm that the 13.72 mm inner diameter accommodates the target cable bundle without excessive force. Ensure the material grade 28 aligns with the intended frequency range for optimal signal integrity protection.

Selection Notes

Select this component when a large bore size is required for thick cables or multi-conductor bundles. The solid construction provides mechanical stability compared to split cores. Consider the 85 ohm impedance profile for applications targeting mid-range radio frequency noise rather than very high frequency signals.

Part Context

This part belongs to the 28B series of ferrite cable cores manufactured by Laird-Signal Integrity Products. The series utilizes material grade 28, which offers a balanced permeability spectrum for general-purpose EMI suppression across various industrial and commercial electronic applications.

Replacement Considerations

Check for other parts within the 28B series that share the same 13.72 mm inner diameter but offer different impedance values if the noise spectrum varies.