Ferrosilicon aluminum magnetic ring
Characteristics of iron silicon aluminum magnetic ring: lower loss than iron powder core, good DC bias characteristics, the cost is between iron powder core and iron nickel molybdenum, material permeability (μ) respectively: 26, 60, 75, 90, 125 iron silicon aluminum standard color is black.
Iron powder core magnetic ring
Iron powder core materials generally use different coating colors to distinguish different materials, the international unified color standard is as follows:
2 Material: red body, transparent (FERRITE) underside ---- This material has low permeability and can reduce the AC flux density during operation better than other materials without void loss.
8 material: yellow body, red underside -- this material in the case of high deflection, low core loss, and good linearity, is a good high-frequency material, but also the most expensive material.
Material 18: light green body, red underside -- this material is the same as material 8, low core loss, but high permeability and low cost, good DC saturation characteristics.
Material: yellow body, white underside - the most popular material, is a cost-effective general purpose material, suitable for a wide range of applications such as power conversion and line filtering.
Material: grey body, green underside -- good linearity, low cost and relatively low permeability, widely used with large size and high power UPS anti-flow.
33 material: it is an inexpensive material that can replace 8 material. It is suitable for the case where core loss is not important at high frequency and good linearity at high deflection.
40: green body, yellow underside - the cheapest material, its properties are quite similar to 26, commonly used in larger sizes.
Material 52: light green body, blue underside -- this material has low core loss at high frequencies and the same permeability as -26 material, which is widely used in new high frequency resizors.
Below is a brief table of more magnetic materials' permeability, tolerances, temperature coefficients of permeability, and standard colors.