Kellermann-Balun Bausatz

Round Cable EMI Suppression Cores ZFK 18 Typical Impedance (Ω) 10 MHz 91 Ω 25 MHz+ 145 Ω 100 MHz+ 235 Ω 250 MHz 275 Ω Electrical Properties Kernmaterial Ferrit Toroid NiZn H(Oe) 0.22 Dim. mm mm Toleranz Nominal inch Inch misc. A 25.9 ±0.75 1.02 ---- B 12.8 ±0.25 0.505 ---- C 28.6 ±0.80 1.125 ---- ZFK - Material Characteristics Property Unit Symbol Value Initial Permeability @ B < 10 gauss µi 850 Temp. Coeff. Of initial Permeability % °C 1.25 Coercive Force Hc oersted 0.45 Flux Density @ Field Strength Gauss Oersted B H 2900 10 Loss Factor @ Frequency 10 -6 MHz Tan δ/ µi 250 1.0 Curie Temperature °C Tc >130 Resistivity Ohm-cm P 1×105 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 The above quoted properties are typical for Fair-Rite MnZn and NiZn ferrites. Die oben genannten Eigenschaften sind typisch für Fair-Rite MnZn- und NiZn-Ferrite. (Herstellerangabe-Amidon)