2. Ceramic capacitors
A possible definition of a ceramic capacitor could be: a capacitor in which the dielectric is a sintered ceramic material, i.e. densified by high-temperature heat treatment.
Ceramics are inorganic, non-metallic materials that have been processed using a special technology known as ceramic technology: the material is initially in the form of fine powders, micron or submicron in size, which are combined to form an object. It is then subjected to a high-temperature thermal cycle (firing or sintering). The resulting object is called "sintered", and its microstructure, which has evolved during firing, is a compact assembly of grains separated by grain boundaries. The material thus acquires its definitive properties (whether mechanical or electrical). Ceramic capacitor materials are generally oxides with a perovskite-type crystalline...
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Ceramic capacitors
Bibliography
- (1) - NIEPCE (J.C.), HAUSSONNE (J.M.) - BaTiO 3 : matériau de base pour les condensateurs céramiques. - Vol. I et II. Éditions SEPTIMA (1994).
General works
Directory
Manufacturers (non-exhaustive list limited to a few key players)
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Volume markets
MURATA http://www.murata.com
TDK/EPCOS http://www.tdk.com
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Capacitor market
Totally open to international competition, the capacitor industry is the scene of strong global concentration. The number of manufacturers is declining rapidly, and the market share of the leaders is exceeding 20%.
The estimated market breakdown for the various capacitor families is shown in figure
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