Fair-Rite Ferrite Core

Burnished cores designed for use in balun (balance-unbalance) transformers
Applications include broadband transformers in comms and CATV circuits, and auto air bag circuits

The Fair-Rite multi-aperture cores are used in suppression applications and in balun (balance-unbalance) and other broadband transformers. They are also employed in airbag designs to prevent accidental activation.

Core material 43
It has diameter of 6.35mm