closed ferrite rings by Fair-Rite

* for round cables Ø 4.75 to 25.4mm (size B)
* ferrite material 43
* for suppression of conducted interference 100...600MHz

material 43:
* initial permeability @B<10gauss: 800µ
* flux density: 2900 gauss
* @field strength: 10 oersted
* residual flux density: 1300 gauss
* coercive force: 0.45 oersted
* loss factor @1MHz: 250x10-6 tan d/µ
* temperature coefficient of initial permeability: 1,25%/°C
* curie temperature: >130°C
* resistivity: 1x10⁵Ω cm