8504.50.10 Electrical transformers, static converters (for example, rectifiers) and inductors.
8504.50 COILS, toroidal, having ALL of the following: (a) winding wire dia NOT exceeding 0.25 mm; (b) internal window dia NOT exceeding 40 mm; (c) external dia NOT exceeding 55 mm Op. 17.06.1985 Dec. 13.01.1986 - TC 8532473
8504.90 CORES AND SHAPES, ferrite, iron powder or molybdenum permalloy powder Op. 13.03.1984 Dec. 13.03.1984 - TC 8342777
8547.9 TC 8535449 SHEETING OR SHAPES, electrically insulating, thermally conductive,
being combinations of two OR more of the following:
(a) silicone rubber;
(b) glass fibre;
(c) boron nitride;