B-20F-28

Overview

The KEMET B-20F-28 is a toroidal ferrite cable core designed for EMI suppression. It features an internal diameter of 1.3mm and an outer diameter of 2.8mm, with a total length of 3mm. Constructed from MnZn material, this component functions as a noise suppressor sleeve. The part belongs to the B-20 series and serves as an alias for UECB200F280000.

Feature Summary

• Provides electromagnetic interference suppression through high-frequency noise attenuation
• Utilizes MnZn ferrite material for effective magnetic performance
• Toroidal geometry allows cables to pass directly through the core

Applications

• Cable noise suppression in electronic assemblies
• EMI filtering for signal and power lines
• High-frequency noise reduction in compact spaces

Procurement Notes

Verify the specific MnZn material composition and dimensional tolerances against the official KEMET datasheet before integration. Confirm that the 1.3mm inner diameter accommodates the target cable gauge without mechanical stress. Ensure the application environment does not exceed the thermal limits of the ferrite material.

Selection Notes

Select this component when space constraints require a low-profile noise solution. The 3mm length suits tight packaging requirements. Verify compatibility with the target frequency range of the interference. Consider the physical clearance needed for the 2.8mm outer diameter during PCB or chassis layout.

Part Context

This component is part of the KEMET B-20 series of ferrite cores. It is categorized under EMI suppression products. The part is also identified by the alias UECB200F280000 within distributor databases. It represents a standard passive component for managing conducted emissions.

Replacement Considerations

Check for direct equivalents with identical 1.3mm ID and 2.8mm OD dimensions. Verify that substitute materials offer comparable permeability at the operating frequency. Ensure mechanical fitment matches the original 3mm length constraint.