MULTILAYER CERAMIC CAPACITOR

摘要

In some embodiments, a multilayer ceramic capacitor 10 has 23 unit capacitors UC1 to UC23, where these 23 unit capacitors UC1 to UC23 constitute: a first low-capacitance area LA1 constituted by three unit capacitors UC1 to UC3; a high-capacitance area HA constituted by 17 unit capacitors UC4 to UC20 whose unit capacitance is greater than that of the three unit capacitors UC1 to UC3; a second low-capacitance area LA2 constituted by three unit capacitors UC21 to UC23 whose unit capacitance is smaller than that of the 17 unit capacitors UC4 to UC20; a first variable-capacitance part which is present between the first low-capacitance area LA1 and high-capacitance area HA, and which includes the two adjacent unit capacitors UC3, UC4; and a second variable-capacitance part which is present between the high-capacitance area HA and second low-capacitance area LA2, and which includes the two adjacent unit capacitors UC20, UC21.

主权项

1. A multilayer ceramic capacitor having multiple internal electrode layers stacked with dielectric layers sandwiched in between, with the multiple internal electrode layers connected alternately to a pair of external electrodes, wherein, when a part constituted by two of the internal electrode layers positioned adjacent to each other in a laminating direction and the dielectric layer present between these two internal electrode layers is considered a unit capacitor, then the multilayer ceramic capacitor has an n number (n≧x+y+z, where x, y and z are each an integer of 2 or greater) of unit capacitors;
said n number of unit capacitors constituting: (1) a first low-capacitance area constituted by an x number of unit capacitors; (2) a high-capacitance area constituted by a y number of unit capacitors whose unit capacitance is greater than that of the x number of unit capacitors; (3) a second low-capacitance area constituted by a z number of unit capacitors whose unit capacitance is smaller than that of the y number of unit capacitors; (4) a first variable-capacitance part which is present between the first low-capacitance area and the high-capacitance area, and which includes two adjacent unit capacitors whose unit capacitance difference is a largest on a first low-capacitance area side; and (5) a second variable-capacitance part which is present between the high-capacitance area and the second low-capacitance area, and which includes two adjacent unit capacitors whose unit capacitance difference is a largest on a second low-capacitance area side.