Iron powder cores are pressed from selected grades of iron mixed with
a bonding material. High resistivity is required to reduce the eddy current
losses and for this purpose the iron powder is subjected to an acid
treatment. to produce an insulating layer on the surface of each individual
particle. A feature of the manufacturing process is that minute air gaps
occur between the particles causing the permeability of the iron to be
severely reduced. Because of these gaps it is difficult to saturate iron
powder cores, especially those operating in an open magnetic circuit.

MATERIALS

FERROPERM offer two ranges of Iron Powder cores -
High frequency powder cores for applications in high Q inductors and
wide-band matching transformers, and high permeability cores with
applications in SMPS chokes and for EMI suppression.

SPECIFICATIONS
for iron dust core compositions

CORE TYPES

FERROPERM can supply the following types:

• TOROIDS and CYLINDERS
• BALUN CORES
• LEADED MINI-CHOKE CORES

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