ZW41206TC is an epoxy coated toroidal core in Magnetics W material

Magnetics W material is a high permeability ferrite material used for EMI/RMI suppression, common mode chokes, pulse and broadband transformers.

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

Epoxy is coated to 200C continuous operation. Coating thickness with Epoxy is typically less than with Nylon