LYCOS RETRIEVER 
Capacitor: Capacitance
built 631 days ago
The amount of capacitance possible in a tantalum capacitor is directly related to the type of tantalum powder used to manufacture the anode. Powder improvements have been achieved through close development with the material suppliers. AVX Tantalum is committed to driving the available technology forward as is clearly demonstrated by extended ratings continually being developed, and new technologies such as TACmicrochip® and OxiCap® technology.
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The capability of a capacitor to store electricity is known as capacitance of that capacitor. It is denoted by C. The measuring unit of capacitance is Farad, but Farad is very large unit. Its smaller units are Kilo Micro Farad (KMFD), Micro Farad (MFD), Kilo Pico Farad (KPF) or Nano Farad (NF) and Pico Farad (PF). The relation between these units is given below: 1000 PF = .1 KPF or 1 NF 1000 KPF = 1 MFD/MF/UF 1000MFD/MF/UF - 1 KMFD/KMF/ KUF 1000 KMFD/KMF/KUF = 1 Farad (F)
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The first generation of the MLCC project resulted in a lead- and cadmium-free Class 1 multilayer ceramic capacitor. KEMET realized the great potential of this newly invented material set and associated processing technology, and after optimization of all the materials and processes, released a second generation of the MLCCs with up to 15 times higher capacitance. These second-generation capacitors have the highest-ever volumetric efficiency and represent the state of the art in Class 1 MLCCs. The technology is covered in one US patent, one published US patent application, and one unpublished US patent application and has led to a generation of higher-reliability ceramic capacitors that are helping the electronics industry push the frontiers of miniaturization and high performance, while still being environmentally friendly.
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The value of capacitance of a capacitor is directly proportional to the effective area of the plates. It means that the capacitance of the capacitor increases with area of the plates of the capacitor. C a A, here A = Area of the plates. C ~ Capacitance.
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Each wire forms a capacitor plate. Gimmick capacitors are ... a form of variable capacitor. Small changes in capacitance (20 percent or less) are obtained by twisting and untwisting the two wires.
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As with paper capacitors, the capacitance value of an electrolytic capacitor is "easy to please", and an exact uF replacement is not necessary. For example, you can replace a 30 uF with a 33 uF or replace a 20 uF with a 22uF. If you can't find a close replacement …better to go with a higher uF value than a lower uF.
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Capacitance