Ceramic capacitor
AssigneeTDK Corporation
InventorsTakaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
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Abstract
The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.
Claims19
A ceramic capacitor comprising:
- at least one ceramic capacitor element having terminal electrodes at two side end surfaces facing opposite each other;
- and
- at least a pair of metal plate terminals each connected to one of said terminal electrodes at the front end thereof and each provided with a folded portion in a middle area thereof and a terminal portion to be connected to the outside to the rear of said folded portion, with a coefficient of average linear expansion α thereof over a range of −55° C. to 125° C. set at 13×10−6 or lower.
A ceramic capacitor comprising:
- at least one ceramic capacitor element having terminal electrodes at two side end surfaces facing opposite each other;
- and
- at least a pair of metal plate terminals each connected to one of said terminal electrodes at the front end thereof and each provided with a folded portion in a middle area thereof and a terminal portion to be connected to the outside to the rear of said folded portion, said at least one ceramic capacitor element satisfies α1<α2 with α1 representing a coefficient of average linear expansion thereof over a temperature range of 25° C. to −55° C. and α2 representing a coefficient of average linear expansion thereof over a temperature range of 25° C. to 125° C.;
- and
- said at least a pair of metal plate terminals satisfy β<1.3 α2 and β>0.7 α1 with β representing a coefficient of average linear expansion thereof over a temperature range of −55° C. to 125° C.
Dependencies are inferred from the claim text.