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Material BN43 Dieses NiZn ist unser populärster Ferrit zur Unterdrückung leitungsgebundener elektromagnetischer Störungen von 20 MHz bis 250 MHz. Dieses Material wird auch für induktive Anwendungen wie Hochfrequenz-Gleichtaktdrosseln verwendet. BN-43 Material Characteristics Property Item Unit/ Symbol Value Max. Permeabilität Freq. MHz Reso-nanz Freq. MHz Breit-band Freq. MHz Drossel Initial Permeability@ B < 10 gauss µi 850 3000 0.01-1 1-50 30-600 Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 1.25 Density gm/cm3 ≈4.7 g/cm3 Curie Temperature °C Tc >130 Resistivity Ohm-cm Ρ 1×105 Electrical Specifications Bestellnr. Kern-Material Item Unit/Symbol Condition Value AL-Toleranz BN43-302 Ferrit Toroid AL nH/N2 @ 10 KHz 1280 ±20% NiZn Initial Permeability µ0 @ B < 10 gauss 850 ±20% Temp. Coeff. Of initial Permeability % °C 20-70°C 1.25 Typ. Coercive Force Hc oersted 0.45 Typ. Residual Flux Density Gauss, Br N/A 1300 Typ. Flux Density Gauss, B Initial (B), oersted 2900 Typ. Gauss, H @ @ Field Strength (H), oersted 10 Typ. Curie temperature °C Tc > 130 Nom. Resistivity Ω cm. p @ Field Strength 10⁵ Typ. Dimensional Tolerances Dim Case In Toleranz mm Toleranz Weight Gewicht A B (Outer Diameter)/mm 0.525 -- 13.3 ±0.60 -- --- B A (Inner Diameter)/mm 0.407 -- 10.3 ±0.30 --- --- C H (Height)/mm 0.295 -- 7.5 ±0.35 --- -- E 0.225 5.7 ±0.25 H 0.15 3.8 ±0.25 Ferrite Material Constants Specific Heat 0.25 cal/g/°C Thermal Conductivity 3.5 - 4.5 mW/cm-°C Coefficient of Linear Expansion 8 - 10x10-6/°C Tensile Strength 4.9 kgf/mm2 Compressive Strength 42 kgf/mm2 Young's Modulus 15x103 kgf/mm2 Hardness (Knoop) 650 Specific Gravity ≈4.7 g/cm3 Die oben genannten Eigenschaften sind typisch für Amidon MnZn- und NiZn-Ferrite. The above quoted properties are typical for Amidon MnZn and NiZn ferrites.
