Ferrites for any application in any shape
28 February 2001
Passive Components
Magnetics, a leading manufacturer of 'soft' magnetic materials and components supplied worldwide to the electronics industry is offering a comprehensive range of materials, components and geometries. Magnetics provides the designer with an extensive selection.
Ferrites are ceramic structures made from high purity oxides of manganese, zinc and iron. They are pressed, fired and machined to meet requirements. They can be used over a wide frequency range, having a high electrical resistivity and low eddy current losses and are used in magnetic circuits for both low level and power applications. For most favourable combinations of low volume, low cost, high Q and good time/temperature stability, ferrites are considered the best choice for applications in frequencies from 10 kHz to 2 MHz.
Power ferrites, available in seven permeabilities (1500 to 15 000) offer low core losses and high flux capability and are suitable for high power/high temperature operation.
For low level applications, cores come with linear temperature characteristics in permeabilities of 750, 1400 and 2000 or flat temperature characteristics in a 2300 permeability material. For filter applications, cores are gapped to standard inductance factors.
Standard geometries include E, I and U cores: EC, ETD, PQ and RM and slab-sided cores; toroids and pot cores. Special shapes can be machined.
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