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Inductance manufacturing of raw materials of the core

2016-12-06 16:11:21 Source:Shenzhen Yininz technology co., LTD    Author:Admin    Visit:109
Inductance of the production of raw materials are core, copper, skeleton, etc., and the production of an inductor is about the decisive choice of core, the following details we introduce several major characteristics of the core

Iron core
  The iron core is mainly a kind of soft magnetic powder core, mainly use pure iron powder to add insulating agent, adhesive, through extrusion molding, general initial permeability is 75 or less, the product has very high saturation flux Density, the general product because the surface resistance is small, so not suitable for more than 200KHz circuit, a single technology with the progress, but also continue to appear high-frequency materials. Iron core is generally used for power-type magnetic ring inductance, more commonly used in a variety of switching power supply

2. Nickel-zinc core
  Nickel-zinc core is a soft ferrite core, nickel-zinc core generally the initial permeability is 5 ~ 1500, the core is generally used in high-frequency circuit, due to a high surface resistance (100MΩ above )
  The use of nickel-zinc core:
    Anti-EMI ferrite: EMI materials rely on magnetic and electrical losses to absorb electromagnetic energy to absorb the interference of electromagnetic waves, it is generally required in the 10 ~ 100MHz conditions have a higher impedance, generally used for magnetic beads;
    Frequency-selective filter inductors: such materials generally require low loss, low temperature coefficient, high Curie temperature, high-frequency characteristics of good, generally used for color ring inductance.
    Choke inductance and power inductance: The magnetic core generally requires a large saturation magnetic flux, high Curie temperature characteristics, generally used in magnetic inductance, part of the word inductance axial inductance;

3. Mn-Zn core
  MnZn core is also a soft magnetic core, has a high initial permeability (2000 ~ 15000), the product surface resistance is low, and the initial permeability of the higher surface resistance is lower, it is generally used in the following circuit 1MHz .
  The main purpose
    The initial permeability of the material generally in the 2000 to 3000 or so, a high saturation flux density, low loss, is about 100KHz one of the best power inductor core; generally used in magnetic ring common mode inductors

4. Ferroalloys
  Ferroalloy material to improve the shortcomings of iron core, and strengthen the advantages of iron core, generally used in very demanding magnetic power <Inductor

5. Amorphous alloy material
  With high initial permeability (50000 ~ 60000), high saturation, low loss characteristics, generally used to require very high before use.

Keywords: I word inductance

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