YF40402TC is a parylene coated toroidal core in Magnetics F material

Magnetics F material is a medium frequency general-purpose ferrite material. Engineered for lowest losses at 60°C

Ferrite toroids offer high magnetic efficiency as there is no air gap, and the cross sectional area is uniform.

Parylene C^® is a vacuum deposited coating providing good resistance to moisture and organic solvents. Electrical characteristics are superior to other coatings.