Co-based amorphous core in plastic container 1. high permeability 2.Thickness (18-20 mkm) 3. Annealing in transverse field, permeability more than 100000, very low loss, flat hysteresis loop 4. Application: Common-mode filter chokes, current transformers, including for precise electronic electricity meters, protective cutout, High Frequency power transformers in SMPS, audio transformers, etc. KEY FEATURES OF THE AMORPHOUS MATERIAL: Induction amplitude, Bm(25C) 0.62 T Induction amplitude, Bm(90C) 0.54 T Squareness ratio Br/Bm (@ 100 kHz, 80 A/m) at least 0.90 Curie temperature, Tc 225C Operating temperature range -60C ... +100C Magnetostriction less than 0.110^-6