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1. How to classify capacitors
1.1 Physical characteristics
The capacitor is generally subjected to a voltage of different nature and form, depending on the application. When the voltage is alternating, it is characterized by its frequency f or by its pulsation ω = 2πf.
A capacitor is characterized by a number of physical quantities that define and limit its fields of application.
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Capacity
The primary function of a capacitor is to store an electrical charge Q at a voltage V. Its capacitance C is then equal to the ratio of the stored charge to the voltage V applied between its plates:
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How to classify capacitors
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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