Fair-Rite Ferrite Ring Toroid Core, For: Broadband Transformers, 21 x 13.2 x 11.9mm

Only recommended for common mode inductor applications
Ring configuration optimises ferrite material properties
Cores are supplied burnished to remove sharp edges
A_L values tested at 10kHz and <10 gauss

Line drawing dimensions: A=diameter; B=internal diameter; C=height