Magnesium zinc titanate powder with a barium boron lithium silicate flux and a multilayer ceramic COG capacitor made therefrom
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United States of America Patent
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Oct 30, 2001
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app pub date -
Aug 31, 2000
filing date -
Dec 31, 1998
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Abstract
In a start powder mixture of magnesium zinc titanate and a barium lithium boro-silicate flux, it is discovered that the addition of lithium to the flux enables the manufacture of multilayer ceramic capacitors using the powder mixture, that perform to the COG standard including an accelerated life test. This addition of lithium also makes possible the sintering to maturity of COG multilayer capacitors at temperatures as low as 950.degree. C., which in turn allows the use of silver-palladium alloy buried electrodes of high silver and low palladium content which in turn lead to higher capacitor Q and lower manufacturing costs.
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