FT-3K50T F4627HS Hitachi Metals

FINEMET Nanocrystalline Components In addition to FT-3M and FT-3L series, three kinds of series are now available. Improved high frequency characteristics FT-3K50T FT-8K50D Improved DC superposed characteristics FT-3TL Reduced core loss FINEMET FINEMET Nanocrystalline Fe-based Soft Magnetic Material with High Saturation Flux Density, High Relative Permeability and Low Core Loss What is FINEMET The precursor of FINEMET is amorphous ribbon non- crystalline obtained by rapid quenching at one million / second from the molten metal consisting of Fe, Si, B and small amounts of Cu and Nb. These crystallized alloys have grains which are extremely uniform and small, about ten nanometers in size. Amorphous metals which contain certain alloy elements show superior soft magnetic properties through crystallization. It was commonly known that the characteristics of soft magnetic materials are larger crystal grains yield better soft magnetic properties. Contrary to this common belief, soft magnetic material consisting of a small, nano-order, crystal grains have excellent soft magnetic properties. Features Satisfy both high saturation magnetic fl ux 1. 1. density and high permeability High saturation magnetic flux density comparable to Fe-based amorphous metal. High permeability 2. comparable to Co-based amorphous metal. 2. Low core Loss 1/5th the core loss of Fe-based amorphous metal and approximately the same core loss as Co-based 3. amorphous metal. Low magnetostriction 3. Less affected by mechanical stress. Very low audio noise emission. 4. Excellent temperature characteristics and small 4. aging effects Small permeability variation less than 10% at a temperature range of -50 150 . Unlike Co-based amorphous metals, aging effects are very small. 5. Excellent characteristics over wide frequency range 5. High permeability and low core loss over wide frequency range, which is equivalent to Co-based amorphous metal. 6. Flexibility to control magnetic properties B-H 6. curve shapeduring annealing Three types of B-H curve squareness, high, middle and low remanence ratio, corresponding to various applications 2