Monolithic capacitor and mounting structure thereof

Abstract

A monolithic capacitor includes a main capacitor unit having first capacitor portions and a second capacitor portion arranged in a direction of lamination, with the first capacitor portion located towards at least one end in the direction of lamination, so that the first capacitor portion is located closer to a mounting surface than the second capacitor portion. The number of pairs of third and fourth lead-out portions for third and fourth internal electrodes in the second capacitor portion is less than the number of pairs of first and second lead-out portions for first and second internal electrodes in the first capacitor portion, so that the first capacitor portion contributes to decreasing ESL while the second capacitor portion contributes to increasing ESR.

1 - 16 . (canceled)  
   
   
       17 : A multilayer capacitor comprising a multilayer body in which a plurality of dielectric layers and a plurality of inner electrodes are alternately laminated, and a plurality of outer conductors formed on the multilayer body; 
 wherein the plurality of inner electrodes include a plurality of first inner electrodes and a plurality of second inner electrodes alternately arranged;    wherein the plurality of outer conductors include a first terminal conductor, a second terminal conductor, a first outer connecting conductor electrically connected to the plurality of first inner electrodes, and a second outer connecting conductor electrically connected to the plurality of second inner electrodes;    wherein the first terminal conductor is formed on a first side face of the multilayer body;    wherein the second terminal conductor is formed on the first side face of the multilayer body or a second side face thereof opposing the first side face;    wherein the first outer connecting conductor is formed on the first or second side face of the multilayer body;    wherein the second outer connecting conductor is formed on the first or second side face of the multilayer body;    wherein each of the first inner electrodes is electrically connected to the first outer connecting conductor through a lead conductor;    wherein each of the second inner electrodes is electrically connected to the second outer connecting conductor through a lead conductor;    wherein at least one first inner connecting conductor and at least one second inner connecting conductor are laminated in the multilayer body;    wherein the first inner connecting conductor is electrically connected to the first terminal conductor and the first outer connecting conductor, whereas the second inner connecting conductor is electrically insulated from the first inner connecting conductor but is electrically connected to the second terminal conductor and the second outer connecting conductor;    wherein the first and second inner connecting conductors are laminated in the multilayer body such that the multilayer body includes at least one set of the first and second inner electrodes neighboring each other with the dielectric layer in between; and    wherein an equivalent series resistance is set to a desirable value by adjusting the number of first inner connecting conductors and the number of second inner connecting conductors respectively.    
   
   
       18 : A multilayer capacitor according to  claim 17 , wherein the first inner connecting conductor includes a region opposing the second inner electrode with the dielectric layer in between.  
   
   
       19 : A multilayer capacitor according to  claim 17 , wherein the second inner connecting conductor includes a region opposing the first inner electrode with the dielectric layer in between.  
   
   
       20 : A multilayer capacitor according to  claim 17 , wherein the first terminal conductor and the first outer connecting conductor are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       21 : A multilayer capacitor according to  claim 17 , wherein the second terminal conductor and the second outer connecting conductor are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       22 : A multilayer capacitor according to  claim 17 , wherein a plurality of first terminal conductors and a plurality of first outer connecting conductors are provided by the same number; 
 wherein a plurality of second terminal conductors and a plurality of second outer connecting conductors are provided by the same number;    wherein the plurality of first terminal conductors and the plurality of first outer connecting conductors are formed on the first side face of the multilayer body, whereas the plurality of second terminal conductors and the plurality of second outer connecting conductors are formed on the second side face of the multilayer body;    wherein at least one of both neighboring sides of each first terminal conductor on the first side face is formed with the first outer connecting conductor;    wherein at least one of both neighboring sides of each first outer connecting conductor on the first side face is formed with the first terminal conductor;    wherein at least one of both neighboring sides of each second terminal conductor on the second side face is formed with the second outer connecting conductor; and    wherein at least one of both neighboring sides of each second outer connecting conductor on the second side face is formed with the second terminal conductor.    
   
   
       23 : A multilayer capacitor according to  claim 17 , wherein at least one each of the first terminal conductor, second terminal conductor, first outer connecting conductor, and second outer connecting conductor are provided; 
 wherein the first terminal conductor or second terminal conductor is located at a position axisymmetrical to the first terminal conductor about a center axis of the multilayer body passing respective center points of two side faces of the multilayer body orthogonal to the laminating direction of the multilayer body;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position axisymmetrical to the first outer connecting conductor about the center axis of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position axisymmetrical to the second terminal conductor about the center axis of the multilayer body;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position axisymmetrical to the second outer connecting conductor about the center axis of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position opposing the first terminal conductor in a direction along which the first and second side faces of the multilayer body oppose each other;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position opposing the first outer connecting conductor in the opposing direction of the first and second side faces of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position opposing the second terminal conductor in the opposing direction of the first and second side faces of the multilayer body; and    wherein the first outer connecting conductor or second outer connecting conductor is located at a position opposing the second outer connecting conductor in the opposing direction of the first and second side faces of the multilayer body.    
   
   
       24 : A multilayer capacitor comprising a multilayer body in which a plurality of dielectric layers and a plurality of inner electrodes are alternately laminated, and a plurality of outer conductors formed on the multilayer body; 
 wherein the plurality of inner electrodes include a plurality of first inner electrodes and a plurality of second inner electrodes alternately arranged;    wherein the plurality of outer conductors include a first terminal conductor, a second terminal conductor, a first outer connecting conductor electrically connected to the plurality of first inner electrodes, and a second outer connecting conductor electrically connected to the plurality of second inner electrodes;    wherein the first terminal conductor is formed on a first side face of the multilayer body; wherein the second terminal conductor is formed on the first side face of the multilayer body or a second side face thereof opposing the first side face;    wherein the first outer connecting conductor is formed on the first or second side face of the multilayer body; wherein the second outer connecting conductor is formed on the first or second side face of the multilayer body;    wherein each of the first inner electrodes is electrically connected to the first outer connecting conductor through a lead conductor;    wherein each of the second inner electrodes is electrically connected to the second outer connecting conductor through a lead conductor;    wherein at least one first inner connecting conductor and at least one second inner connecting conductor are laminated in the multilayer body;    wherein the first inner connecting conductor is electrically connected to the first terminal conductor and first outer connecting conductor, whereas the second inner connecting conductor is electrically insulated from the first inner connecting conductor but is electrically connected to the second terminal conductor and second outer connecting conductor;    wherein the first and second inner connecting conductors are laminated in the multilayer body such that the multilayer body includes at least one set of the first and second inner electrodes neighboring each other with the dielectric layer in between; and    wherein an equivalent series resistance is set to a desirable value by adjusting a position of the first inner connecting conductor in the multilayer body in the laminating direction and a position of the second inner connecting conductor in the multilayer body in the laminating direction respectively.    
   
   
       25 : A multilayer capacitor according to  claim 24 , wherein the first inner connecting conductor includes a region opposing the second inner electrode with the dielectric layer in between.  
   
   
       26 : A multilayer capacitor according to  claim 24 , wherein the second inner connecting conductor includes a region opposing the first inner electrode with the dielectric layer in between.  
   
   
       27 : A multilayer capacitor according to  claim 24 , wherein the first terminal conductor and the first outer connecting conductor are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       28 : A multilayer capacitor according to  claim 24 , wherein the second terminal conductor and the second outer connecting conductor are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       29 : A multilayer capacitor according to  claim 24 , wherein a plurality of first terminal conductors and a plurality of first outer connecting conductors are provided by the same number; 
 wherein a plurality of second terminal conductors and a plurality of second outer connecting conductors are provided by the same number;    wherein the plurality of first terminal conductors and the plurality of first outer connecting conductors are formed on the first side face of the multilayer body, whereas the plurality of second terminal conductors and the plurality of second outer connecting conductors are formed on the second side face of the multilayer body;    wherein at least one of both neighboring sides of each first terminal conductor on the first side face is formed with the first outer connecting conductor;    wherein at least one of both neighboring sides of each first outer connecting conductor on the first side face is formed with the first terminal conductor;    wherein at least one of both neighboring sides of each second terminal conductor on the second side face is formed with the second outer connecting conductor; and    wherein at least one of both neighboring sides of each second outer connecting conductor on the second side face is formed with the second terminal conductor.    
   
   
       30 : A multilayer capacitor according to  claim 24 , wherein at least one each of the first terminal conductor, second terminal conductor, first outer connecting conductor, and second outer connecting conductor are provided; 
 wherein the first terminal conductor or second terminal conductor is located at a position axisymmetrical to the first terminal conductor about a center axis of the multilayer body passing respective center points of two side faces of the multilayer body orthogonal to the laminating direction of the multilayer body;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position axisymmetrical to the first outer connecting conductor about the center axis of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position axisymmetrical to the second terminal conductor about the center axis of the multilayer body;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position axisymmetrical to the second outer connecting conductor about the center axis of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position opposing the first terminal conductor in a direction along which the first and second side faces of the multilayer body oppose each other;    wherein the first outer connecting conductor or second outer connecting conductor is located at a position opposing the first outer connecting conductor in the opposing direction of the first and second side faces of the multilayer body;    wherein the first terminal conductor or second terminal conductor is located at a position opposing the second terminal conductor in the opposing direction of the first and second side faces of the multilayer body; and    wherein the first outer connecting conductor or second outer connecting conductor is located at a position opposing the second outer connecting conductor in the opposing direction of the first and second side faces of the multilayer body.    
   
   
       31 : A monolithic capacitor comprising a multilayer body in which a plurality of dielectric layers and a plurality of internal electrodes are alternately laminated, and a plurality of external terminal electrodes formed on the multilayer body; 
 wherein the plurality of internal electrodes include a plurality of first internal electrodes and a plurality of second internal electrodes alternately arranged;    wherein the plurality of external terminal electrodes include a first external terminal electrode, a second external terminal electrode, a third external terminal electrode electrically connected to the plurality of first internal electrodes, and a fourth external terminal electrode electrically connected to the plurality of second internal electrodes;    wherein the first external terminal electrode is formed on a first side face of the multilayer body;    wherein the second external terminal electrode is formed on the first side face of the multilayer body or a second side face thereof opposing the first side face;    wherein the third external terminal electrode is formed on the first or second side face of the multilayer body;    wherein the fourth external terminal electrode is formed on the first or second side face of the multilayer body;    wherein each of the first internal electrodes is electrically connected to the third external terminal electrode through a lead-out portion;    wherein each of the second internal electrodes is electrically connected to the fourth external terminal electrode through a lead-out portion;    wherein at least one third internal electrode and at least one fourth internal electrode are laminated in the multilayer body;    wherein the third internal electrode is electrically connected to the first external terminal electrode and the third external terminal electrode, whereas the fourth internal electrode is electrically insulated from the third internal electrode but is electrically connected to the second external terminal electrode and the fourth external terminal electrode;    wherein the third and fourth internal electrodes are laminated in the multilayer body such that the multilayer body includes at least one set of the first and second internal electrodes neighboring each other with the dielectric layer in between; and    wherein an equivalent series resistance is set to a desirable value by adjusting the number of third internal electrodes and the number of fourth internal electrodes respectively.    
   
   
       32 : A monolithic capacitor according to  claim 31 , wherein the third internal electrode includes a region opposing the second internal electrode with the dielectric layer in between.  
   
   
       33 : A monolithic capacitor according to  claim 31 , wherein the third internal electrode includes a region opposing the first internal electrode with the dielectric layer in between.  
   
   
       34 : A monolithic capacitor according to  claim 31 , wherein the first external terminal electrode and the third external terminal electrode are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       35 : A monolithic capacitor according to  claim 31 , wherein the second external terminal electrode and the fourth external terminal electrode are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       36 : A monolithic capacitor according to  claim 31 , wherein a plurality of first external terminal electrodes and a plurality of third external terminal electrodes are provided by the same number; 
 wherein a plurality of second external terminal electrodes and a plurality of fourth external terminal electrodes are provided by the same number;    wherein the plurality of first external terminal electrodes and the plurality of third external terminal electrodes are formed on the first side face of the multilayer body, whereas the plurality of second external terminal electrodes and the plurality of fourth external terminal electrodes are formed on the second side face of the multilayer body;    wherein at least one of both neighboring sides of each first external terminal electrode on the first side face is formed with the third external terminal electrode;    wherein at least one of both neighboring sides of each third external terminal electrode on the first side face is formed with the first external terminal electrode;    wherein at least one of both neighboring sides of each second external terminal electrode on the second side face is formed with the fourth external terminal electrode; and    wherein at least one of both neighboring sides of each fourth external terminal electrode on the second side face is formed with the second external terminal electrode.    
   
   
       37 : A monolithic capacitor according to  claim 31 , wherein at least one each of the first external terminal electrode, second external terminal electrode, third external electrode, and fourth external terminal electrode are provided; 
 wherein the first external terminal electrode or second external terminal electrode is located at a position axisymmetrical to the first external terminal electrode about a center axis of the multilayer body passing respective center points of two side faces of the multilayer body orthogonal to the laminating direction of the multilayer body;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position axisymmetrical to the third external terminal electrode about the center axis of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position axisymmetrical to the second external terminal electrode about the center axis of the multilayer body;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position axisymmetrical to the fourth external terminal electrode about the center axis of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position opposing the first external terminal electrode in a direction along which the first and second side faces of the multilayer body oppose each other;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position opposing the third external terminal electrode in the opposing direction of the first and second side faces of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position opposing the second external terminal electrode in the opposing direction of the first and second side faces of the multilayer body; and    wherein the third external terminal electrode or fourth external terminal electrode is located at a position opposing the fourth external terminal electrode in the opposing direction of the first and second side faces of the multilayer body.    
   
   
       38 : A monolithic capacitor comprising a multilayer body in which a plurality of dielectric layers and a plurality of internal electrodes are alternately laminated, and a plurality of external terminal electrodes formed on the multilayer body; 
 wherein the plurality of internal electrodes include a plurality of first internal electrodes and a plurality of second internal electrodes alternately arranged;    wherein the plurality of external terminal electrodes include a first external terminal electrode, a second external terminal electrode, a third external terminal electrode electrically connected to the plurality of first internal electrodes, and a fourth external terminal electrode electrically connected to the plurality of second internal electrodes;    wherein the first external terminal electrode is formed on a first side face of the multilayer body;    wherein the second external terminal electrode is formed on the first side face of the multilayer body or a second side face thereof opposing the first side face;    wherein the third external terminal electrode is formed on the first or second side face of the multilayer body;    wherein the fourth external terminal electrode is formed on the first or second side face of the multilayer body;    wherein each of the first internal electrodes is electrically connected to the third external terminal electrode through a lead-out portion;    wherein each of the second internal electrodes is electrically connected to the fourth external terminal electrode through a lead-out portion;    wherein at least one third internal electrode and at least one fourth internal electrode are laminated in the multilayer body;    wherein the third internal electrode is electrically connected to the first external terminal electrode and the third external terminal electrode, whereas the fourth internal electrode is electrically insulated from the third internal electrode but is electrically connected to the second external terminal electrode and the fourth external terminal electrode;    wherein the third and fourth internal electrodes are laminated in the multilayer body such that the multilayer body includes at least one set of the first and second internal electrodes neighboring each other with the dielectric layer in between; and    wherein an equivalent series resistance is set to a desirable value by adjusting a position of the third internal electrode in the multilayer body in the laminating direction and a position of the fourth internal electrode in the multilayer body in the laminating direction respectively.    
   
   
       39 : A monolithic capacitor according to  claim 38 , wherein the third internal electrode includes a region opposing the second internal electrode with the dielectric layer in between.  
   
   
       40 : A monolithic capacitor according to  claim 38 , wherein the third internal electrode includes a region opposing the first internal electrode with the dielectric layer in between.  
   
   
       41 : A monolithic capacitor according to  claim 38 , wherein the first external terminal electrode and the third external terminal electrode are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       42 : A monolithic capacitor according to  claim 38 , wherein the second external terminal electrode and the fourth external terminal electrode are formed adjacent to each other on the same side face of the multilayer body.  
   
   
       43 : A monolithic capacitor according to  claim 38 , wherein a plurality of first external terminal electrodes and a plurality of third external terminal electrodes are provided by the same number; 
 wherein a plurality of second external terminal electrodes and a plurality of fourth external terminal electrodes are provided by the same number;    wherein the plurality of first external terminal electrodes and the plurality of third external terminal electrodes are formed on the first side face of the multilayer body, whereas the plurality of second external terminal electrodes and the plurality of fourth external terminal electrodes are formed on the second side face of the multilayer body;    wherein at least one of both neighboring sides of each first external terminal electrode on the first side face is formed with the third external terminal electrode;    wherein at least one of both neighboring sides of each third external terminal electrode on the first side face is formed with the first external terminal electrode;    wherein at least one of both neighboring sides of each second external terminal electrode on the second side face is formed with the fourth external terminal electrode; and    wherein at least one of both neighboring sides of each fourth external terminal electrode on the second side face is formed with the second external terminal electrode.    
   
   
       44 : A monolithic capacitor according to  claim 38 , wherein at least one each of the first external terminal electrode, second external terminal electrode, third external electrode, and fourth external terminal electrode are provided; 
 wherein the first external terminal electrode or second external terminal electrode is located at a position axisymmetrical to the first external terminal electrode about a center axis of the multilayer body passing respective center points of two side faces of the multilayer body orthogonal to the laminating direction of the multilayer body;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position axisymmetrical to the third external terminal electrode about the center axis of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position axisymmetrical to the second external terminal electrode about the center axis of the multilayer body;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position axisymmetrical to the fourth external terminal electrode about the center axis of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position opposing the first external terminal electrode in a direction along which the first and second side faces of the multilayer body oppose each other;    wherein the third external terminal electrode or fourth external terminal electrode is located at a position opposing the third external terminal electrode in the opposing direction of the first and second side faces of the multilayer body;    wherein the first external terminal electrode or second external terminal electrode is located at a position opposing the second external terminal electrode in the opposing direction of the first and second side faces of the multilayer body; and    wherein the third external terminal electrode or fourth external terminal electrode is located at a position opposing the fourth external terminal electrode in the opposing direction of the first and second side faces of the multilayer body.