JP6378707B2 - Multilayer ceramic capacitor - Google Patents

Description

  The present invention uses a capacitor body having a capacitor body having a surface that reduces the height dimension of each of two surfaces facing in the length direction at each end of at least one of the two surfaces facing in the height direction. It relates to ceramic capacitors.

  FIG. 1 shows a conventional capacitor body 101 corresponding to the above (see, for example, FIGS. 8 to 10 of Patent Document 1 described later). Incidentally, L11 in FIG. 1 is the length of the capacitor body 101, W11 is the width of the capacitor body 101, and H11 is the height of the capacitor body 101.

  The capacitor body 101 includes a first surface f11 and a second surface f12 facing in the length direction, a third surface f13 and a fourth surface f14 facing in the width direction, and a fifth surface f15 and a sixth surface f16 facing in the height direction. And have. Each of the fifth surface f15 and the sixth surface f16 has surfaces f15a and f16a for reducing the height direction dimension of the first surface f11 over the entire width direction at the end on the first surface f11 side, and Surfaces f15b and f16b that reduce the height direction dimension of the second surface f12 are provided over the entire width direction at the end on the second surface f12 side. In addition, the capacitor main body 101 incorporates a capacitor portion (reference numeral omitted) in which a plurality of first internal electrode layers 102 and a plurality of second internal electrode layers 103 are alternately stacked via a dielectric layer 104.

  Here, the malfunction which may arise with the multilayer ceramic capacitor using the capacitor | condenser main body 101 shown in FIG. 1 is demonstrated.

  The capacitor body 101 shown in FIG. 1 becomes a multilayer ceramic capacitor that can be mounted on a circuit board by providing external electrodes at both ends in the length direction. For example, when each external electrode is U-shaped, one external electrode has a portion along the first surface f11, a portion along the fifth surface f15, and a portion along the sixth surface f16. The edge of the layer 102 is connected to a portion along the first surface f11. The other external electrode has a portion along the second surface f12, a portion along the fifth surface f15, and a portion along the sixth surface f16. The edge of each second internal electrode layer 103 is the second surface f12. It is connected to the part along.

  However, since the capacitor body 101 has the outer shape shown in FIG. 1, the portion between the portion along the first surface f11 and the portion along the fifth surface f15 of one of the external electrodes corresponds to the aspect of the surface f15a. And a portion between the portion along the first surface f11 and the portion along the sixth surface f16 has a shape corresponding to the aspect of the surface f16a. Further, the portion between the portion along the second surface f12 and the portion along the fifth surface f15 of the other external electrode has a shape commensurate with the aspect of the surface f15b, and the portion along the second surface f12 and the sixth portion A portion between the portion along the surface f16 has a shape corresponding to the aspect of the surface f16b.

  Therefore, when such a multilayer ceramic capacitor is mounted on a circuit board, a portion along the fifth surface f15 of one external electrode and a portion along the fifth surface f15 of the other external electrode are respectively provided as conductors corresponding to each other. When placed on the cream solder printed on the pad, one external electrode has a shape corresponding to the aspect of the surface f15a, and the other external electrode has a shape appropriate to the aspect of the surface f15b. For this reason, the posture of the multilayer ceramic capacitor is likely to be unstable, and it may be mounted on a circuit board while being unstable, so that a posture failure is likely to occur.

Japanese Patent Laying-Open No. 2015-076452

  An object of the present invention is to use a capacitor body having a surface that reduces the height dimension of each of two surfaces facing in the length direction at each of both ends of at least one of the two surfaces facing in the height direction. In such a case, it is an object of the present invention to provide a multilayer ceramic capacitor that can improve a posture error when mounted on a circuit board.

  In order to solve the above-described problems, a multilayer ceramic capacitor according to the present invention includes: (1) a first surface and a second surface facing in the length direction; a third surface and a fourth surface facing in the width direction; A capacitor main body including a capacitor portion having a fifth surface and a sixth surface, in which a plurality of first internal electrode layers and a plurality of second internal electrode layers are laminated via a dielectric layer; and (2) the capacitor A first outer portion having a first portion along the first surface of the main body and a second portion along the fifth surface, each of the plurality of first internal electrode layers being connected to the first portion. An electrode, and (3) a first portion along the second surface of the capacitor body and a second portion along the fifth surface, each of the ends of the plurality of second internal electrode layers at the first portion. A multilayer ceramic capacitor comprising: a second external electrode having an edge connected thereto; A first constricted surface for reducing the height-direction dimension of the first surface is provided across the entire width direction at an end of the fifth surface of the sensor body on the first surface side, and the capacitor body includes the first constricted surface. A second constricted surface for reducing the height dimension of the second surface is provided over the entire width direction at the end of the second surface on the second surface side, and the first external electrode and the capacitor body A first correction portion for adjusting a cross-sectional shape of the portion of the first external electrode facing the first constriction surface to be substantially perpendicular to the first constriction surface of the fifth surface; In order to adjust the cross-sectional shape of the portion of the second external electrode facing the second constricted surface between the second external electrode and the second constricted surface of the fifth surface of the capacitor body to a substantially right angle. The 2nd correction part is provided.

  According to the present invention, a capacitor body having a surface that reduces the height dimension of each of the two surfaces facing in the length direction is used at each end of at least one of the two surfaces facing in the height direction. Even in this case, it is possible to provide a monolithic ceramic capacitor that can improve poor posture when mounted on a circuit board.

FIG. 1A is a view of a conventional capacitor body viewed from the sixth surface f16 side, and FIG. 1B is a cross-sectional view taken along the line S11-S11 of FIG. 2A is a view of the capacitor body to which the present invention is applied as viewed from the fifth surface f5 side, FIG. 2B is a cross-sectional view taken along line S1-S1 in FIG. 2A, and FIG. FIG. 2A is a cross-sectional view taken along line S2-S2 in FIG. 2A, and FIG. 2D is a view of the capacitor body shown in FIG. 2A viewed from the first surface f1 side. 3A and 3B are views for explaining a method of manufacturing the capacitor body shown in FIG. 4A and 4B are diagrams for explaining a method of manufacturing the capacitor body shown in FIG. 5A is a cross-sectional view corresponding to FIG. 2B showing a multilayer ceramic capacitor using the capacitor body shown in FIG. 2, and FIG. 5B is a side of the capacitor body on the first surface f1 side. It is the figure seen from. FIG. 6 is a diagram corresponding to FIG. 2A showing a modification of the capacitor body shown in FIG.

  FIG. 2 shows a capacitor body 11 to which the present invention is applied. 2 is the length of the capacitor body 11, W is the width of the capacitor body 11, and H is the height of the capacitor body 11. 2 shows the capacitor body 11 in which the length L, the width W, and the height H are such that length L> width W = height H. The length L, width W, and height are illustrated. The relationship between H is length L> width W> height H, length L> height H> width W, width W> length L = height H, width W> length L> height H or width W> height H> length L may be sufficient.

  The capacitor body 11 includes a first surface f1 and a second surface f2 facing in the length direction, a third surface f3 and a fourth surface f4 facing in the width direction, and a fifth surface f5 and a sixth surface f6 facing in the height direction. And have. Although the first surface f1, the second surface f2, the third surface f3, and the fourth surface f4 are substantially flat surfaces, the first constricted surface f5a and the second constricted surface f5b of the fifth surface f5 are formed. The removed portion is a convex curved surface with the center in the width direction swelled, and the portion other than the first constricted surface f6a and the second constricted surface f6b of the sixth surface f6 is a convex curved surface with the center in the width direction swelled. (See FIGS. 2C and 2D). In addition, the fifth surface f5 and the sixth surface f6 respectively extend the first constricted surfaces f5a and f6a at the end on the first surface f1 side to reduce the height direction dimension of the first surface f1 over the entire width direction. And the second constricted surfaces f5b and f6b for reducing the height dimension of the second surface f2 at the end on the second surface f2 side over the entire width direction (FIG. 2). (See (B) and FIG. 2 (D)). Each of the first constricted surfaces f5a and f6a swells in the center in the width direction and is a convex curved surface inclined toward the first surface f1, and each of the second constricted surfaces f5b and f6b swells in the center in the width direction, And it is a convex curved surface inclined toward the second surface f2.

  FIG. 2 shows a portion of the fifth surface f5 excluding the first constricted surface f5a and the second constricted surface f5b and a portion of the sixth surface f6 excluding the first constricted surface f6a and the second constricted surface f6b. Although the length direction dimensions and the convex curved surface aspects are substantially the same, the length direction dimensions may be slightly different, and the convex curved face aspects may be slightly different. Good. Further, in FIG. 2, the lengthwise dimensions and the convex curved surfaces of the first constricted surface f5a, the second constricted surface f5b, the first constricted surface f6a, and the second constricted surface f6b are made substantially the same. Although the thing is shown, the dimension of each length direction may differ a little, and the aspect of a convex curve may also differ a little. Further, the portion of the fifth surface f5 excluding the first constricted surface f5a and the second constricted surface f5b, the portion of the sixth surface f6 excluding the first constricted surface f6a and the second constricted surface f6b, and the first The first constriction surface f5a, the second constriction surface f5b, the first constriction surface f6a, and the second constriction surface f6b do not necessarily have to be convex curved surfaces having a single curvature radius. A curved surface that does not have a radius as a whole has a shape of a convex curved surface, a combination of multiple curved surfaces with different shapes, a shape that has a convex curved surface as a whole, or a substantially flat surface As a whole, a portion having a convex curved surface shape or the like may be used.

  Further, the capacitor body 11 has a built-in capacitor portion (reference numeral omitted) in which a plurality of first internal electrode layers 12 and a plurality of second internal electrode layers 13 are alternately stacked via dielectric layers 14. Both sides in the width direction and both sides in the height direction of the capacitor portion are covered with a margin portion (reference numeral omitted) made of a dielectric (see FIGS. 2B and 2C). One end portion in the length direction of each first internal electrode layer 12 (the left end portion in FIG. 2B) is a lead portion 12a, and the other end portion in the length direction of each second internal electrode layer 13 (see FIG. The right end portion of B) is a lead-out portion 13a. In FIG. 2, five layers of the first internal electrode layer 12 and the two internal electrode layers 13 are drawn. However, this is for convenience of illustration, and the first internal electrode layer 12 and the second internal electrode layer 13 are drawn. There is no particular limitation on the number of layers of each electrode layer 13.

  If it supplements about the material of the capacitor | condenser main body 11, Preferably in the part except the 1st internal electrode layer 12 and the 2nd internal electrode layer 13 of the capacitor | condenser main body 11, barium titanate, strontium titanate, calcium titanate, magnesium titanate Dielectric ceramics mainly composed of calcium zirconate, calcium zirconate titanate, barium zirconate, titanium oxide, etc., more preferably dielectric ceramics of ε> 1000 or class 2 (high dielectric constant) can be used.

  If it supplements about the material of each 1st internal electrode layer 12, and the material of each 2nd internal electrode layer 13, it is preferable that each 1st internal electrode layer 12 and each 2nd internal electrode layer 13 are nickel, copper, palladium, A good conductor mainly composed of platinum, silver, gold, or an alloy thereof can be used.

  Supplementing the outline and thickness of each first internal electrode layer 12 and each second internal electrode layer 13 and the thickness of each dielectric layer 14, the outline of each first internal electrode layer 12 and each second internal electrode layer 13 has a rectangular shape, and the outline size and thickness of each first internal electrode layer 12 and the outline size and thickness of each second internal electrode layer 13 are substantially the same, and the thickness of each dielectric layer 14 is It is almost the same.

  As can be seen from FIG. 2, the capacitor main body 11 includes a first correction unit 15 and a second correction unit 16. In addition to the surface closely contacting the entire first constricted surface f5a of the fifth surface f5 of the capacitor body 11, the first correction portion 15 is a first surface (reference numeral) that is continuous with the first surface f1 of the capacitor body 11 without a step. Omitted), a second surface (reference numeral omitted) that is continuous with the third surface f3 without a step, a third surface (reference numeral omitted) that is continuous with the fourth surface f4, and a fifth surface f5 (specifically, Has a flat surface in contact with the center of the fifth surface f5 in the width direction and a fourth surface (reference numeral omitted) that is continuous without a step. The first surface, the second surface, the third surface, and the fourth surface of the first correction unit 15 are substantially flat surfaces, and the first surface, the second surface, and the third surface. Each is substantially perpendicular to the fourth surface. In addition to the surface that closely adheres to the entire second constricted surface f5b of the fifth surface f5 of the capacitor main body 11, the second correction portion 16 is a first surface that is continuous with the second surface f2 of the capacitor main body 11 without a step. (Symbol omitted), a second surface (symbol omitted) that is continuous with the third surface f3 without a step, a third surface (symbol omitted) that continues with the fourth surface f4 without a step, and a fifth surface f5 (specifically). Specifically, it has a flat surface in contact with the center in the width direction of the fifth surface f5) and a fourth surface (reference numeral omitted) that is continuous without a step. The first surface, the second surface, the third surface, and the fourth surface of the second compensation unit 16 are substantially flat surfaces, and the first surface, the second surface, and the third surface. Each is substantially perpendicular to the fourth surface.

Note that the same material as each of the first internal electrode layers 12 and the second internal electrode layers 13 described above can be preferably used as the material of the first compensation portion 15 and the material of the second compensation portion 16 .

  Here, an example of a method for manufacturing the capacitor body 11 with the compensation portion shown in FIG. 2 will be described with reference to FIGS. First, a ceramic slurry containing dielectric ceramic powder and an electrode paste containing good conductor powder are prepared. Subsequently, a ceramic slurry is applied to the surface of the carrier film and dried to produce a first green sheet. Also, an electrode paste is printed on the surface of the first green sheet and dried to produce a second green sheet in which internal electrode pattern groups that form the predecessors of the first internal electrode layer 12 and the second internal electrode layer 13 are formed. .

  Subsequently, the unit sheets taken out from the first green sheet are stacked and thermocompression bonded until a predetermined number of sheets are reached, and a portion corresponding to one margin portion in the height direction is produced. In addition, the unit sheet (including the internal electrode pattern group) taken out from the second green sheet is stacked and thermocompression bonded until a predetermined number of sheets are reached, and a portion corresponding to the capacitor portion is produced. Further, the unit sheet taken out from the first green sheet is repeatedly stacked and thermocompression bonded until a predetermined number of sheets are reached, thereby producing a portion corresponding to the other margin part in the height direction. Finally, the stacked whole is thermocompression bonded to produce the unfired laminated sheet ULS shown in FIGS. 3 (A) and 3 (B). As shown in FIG. 3A, first recesses CP1 are formed in stripes on both sides of the unfired laminated sheet ULS in the stacking direction at intervals substantially corresponding to the length of the capacitor body 11, and FIG. As shown in (B), the second recesses CP2 are formed in stripes so as to be substantially orthogonal to the first recesses CP1 at intervals substantially corresponding to the width of the capacitor body 11. Incidentally, the first recess CP1 is mainly formed depending on the difference in the number of internal electrode patterns IEP in the stacking direction, and the second recess CP2 mainly depends on the presence or absence of the internal electrode pattern IEP in the stacking direction. Is formed. Incidentally, in the unfired laminated sheet manufacturing step, the first recessed portion CP1 and the second recessed portion CP2 are laminated in the lamination direction of the unfired laminated sheet ULS by changing the thickness or shape of the pressure-bonding elastic plate made of synthetic rubber or the like. It should be formed on both sides.

Subsequently, as shown in FIG. 4A, the first recessed portions CP1 on one side in the stacking direction of the unfired laminated sheet ULS shown in FIG. To do. The filling portion FM is formed by using an electrode paste (the same electrode paste as the electrode paste or another electrode paste having a different type of good conductor powder) as a filling material, and printing the filling material in each first recess CP1. or by drying, or how to coating and drying with a dispenser can be preferably employed.

  Subsequently, as shown in FIG. 4B, the unfired laminated sheet ULS shown in FIG. 4A is cut into a lattice shape along the virtual line CL, and the unfired laminated sheet corresponding to the capacitor body 11 is obtained. A chip ULC is produced. This unsintered multilayer chip ULC has cut filling portions FMa that are the predecessors of the first compensation portion 15 and the second compensation portion 16 at both ends of one surface in the lamination direction.

  Subsequently, the unsintered laminated chip ULC shown in FIG. 4B is subjected to an atmosphere in accordance with the dielectric ceramic powder contained in the ceramic slurry and the good conductor powder contained in the electrode paste, and the temperature. A large number of pieces are baked at once (including binder removal processing and calcination treatment) in a profile to produce a baked chip. Subsequently, a large number of fired chips are barrel-polished in a lump to round the corners and ridge lines, and the capacitor main body 11 having the first compensation portion 15 and the second compensation portion 16 is produced.

  FIG. 5 shows a multilayer ceramic capacitor using the capacitor body 11 shown in FIG. The multilayer ceramic capacitor shown in FIG. 5 is provided with a substantially L-shaped first external electrode 17 and a substantially L-shaped second external electrode 18 at both ends in the length direction of the capacitor body 11 shown in FIG. Is.

  The first external electrode 17 includes a first portion 17a along the first surface f1 of the capacitor body 11 and the first surface of the first compensation portion 15, and a fifth surface f5 of the capacitor body 11 and the first portion of the first compensation portion 15. 4, and the cross-sectional shape of the portion 17 c of the fifth surface f 5 facing the first constricted surface f 5 a is substantially perpendicular due to the presence of the first compensation portion 15. . The second external electrode 18 includes a first portion 18a along the second surface f2 of the capacitor body 11 and the first surface of the second compensation portion 16, and a fourth surface of the fifth surface f5 and the second compensation portion 16. A second portion 18b extending along the surface, and the cross-sectional shape of the portion 18c of the fifth surface f5 facing the second constricted surface f5b is substantially perpendicular due to the presence of the second compensation portion 16.

  That is, the cross-sectional shape of the portion 17c of the first external electrode 17 facing the first constricted surface f5a is substantially between the first external electrode 17 and the first constricted surface f5a of the fifth surface f5 of the capacitor body 11. A first correction portion 15 is provided for adjusting to a right angle. In addition, between the second external electrode 18 and the second constricted surface f5b of the fifth surface f5 of the capacitor body 11, the cross-sectional shape of the portion 18c of the second external electrode 18 facing the second constricted surface f5b is approximately. The 2nd correction part 16 for adjusting to right angle shape is provided. Incidentally, the width direction dimension of the first external electrode 17 and the width direction dimension of the second external electrode 18 are substantially the same as the width direction dimension (width W) of the capacitor body 11. The position of the end of the first portion 17a of the first external electrode 17 reaches the boundary between the first surface f1 of the capacitor body 11 and the first constricted surface f6a of the sixth surface f6, and the second external electrode 17 The position of the end of the first portion 18a of the electrode 18 reaches the boundary between the second surface f2 and the second constricted surface f6b of the sixth surface f6.

  Although not shown, the first external electrode 17 includes a base film that is in close contact with the first surface f1 and the fifth surface f5 of the capacitor body 11 and the first surface and the fourth surface of the first compensation portion 15, and It has a two-layer structure with a surface film in close contact with the outer surface of the base film, or a multilayer structure having at least one intermediate film between the base film and the surface film. The second external electrode 18 includes a base film in close contact with the second surface f2 and the fifth surface f5 of the capacitor body 11 and the first surface and the fourth surface of the second compensation section 16, and an outer surface of the base film. A two-layer structure with a surface film in close contact with the substrate, or a multilayer structure having at least one intermediate film between the base film and the surface film.

  The base film of each of the first external electrode 17 and the second external electrode 18 is made of, for example, a baked film or a plated film, and the base film is preferably nickel, copper, palladium, platinum, silver, gold, alloys thereof, or the like. Good conductors mainly composed of can be used. The surface film is made of, for example, a plating film, and a good conductor mainly composed of copper, tin, palladium, gold, zinc, alloys thereof, or the like can be used for the surface film. The intermediate film is made of, for example, a plating film, and a good conductor mainly composed of platinum, palladium, gold, copper, nickel, alloys thereof, or the like can be used for the intermediate film.

  Here, a manufacturing method of each of the first external electrode 17 and the second external electrode 18 shown in FIG. 5 will be described. First, electrode paste (described above) is applied to each of the first surface f1 of the capacitor body 11 and the first surface of the first compensation portion 15, and the second surface f2 of the capacitor body 11 and the first surface of the second compensation portion 16. After applying or dipping the same electrode paste as the electrode paste, or another electrode paste having a different type of good conductor powder) and drying, a base film is formed by baking. Electrode paste (described above) is applied to each of the fifth surface f5 of the capacitor body 11 and the fourth surface of the first compensation portion 15, and the fifth surface f5 of the capacitor body 11 and the fourth surface of the second compensation portion 16. The same electrode paste as the electrode paste, or another electrode paste of a different type of good conductor powder) is applied or printed, dried, and then baked to form another base film continuous with the base film. . Incidentally, these base films may be formed by a dry plating method such as sputtering or vacuum deposition.

  Subsequently, a surface film or an intermediate film and a surface film covering each continuous material of the two base films are formed by a wet plating method such as electrolytic plating or electroless plating, or a dry plating method such as sputtering or vacuum deposition. Then, each of the first external electrode 17 and the second external electrode 18 is produced.

  In the multilayer ceramic capacitor shown in FIG. 5, the cross-sectional shape of the portion 17 c of the first external electrode 17 facing the first constricted surface f <b> 5 a of the fifth surface f <b> 5 is substantially perpendicular due to the presence of the first compensation portion 15. The cross-sectional shape of the portion 18c of the second external electrode 18 facing the second constricted surface f5b of the fifth surface f5 is substantially perpendicular due to the presence of the second compensation portion 16. That is, at least a region of the outer surface of the second portion 17b of the first external electrode 17 facing the first compensation portion 15 is a substantially flat surface, and of the outer surface of the second portion 18b of the second outer electrode 18 A region facing at least the second compensation portion 16 is a substantially flat surface.

  Therefore, when the multilayer ceramic capacitor shown in FIG. 5 is mounted on the circuit board, the second portion 17b of the first external electrode 17 and the second portion 18b of the second external electrode 18 are printed on the corresponding conductor pads. Even if placed on the solder paste, the orientation of the multilayer ceramic capacitor is not likely to be unstable, and it is possible to prevent it from being mounted on the circuit board as much as possible. It becomes difficult. That is, it is possible to improve the posture failure when the multilayer ceramic capacitor is mounted on the circuit board.

  FIG. 6 shows a modification of the capacitor body 11 shown in FIG. 2, specifically, a capacitor body 11 in which the shapes of the first compensation unit 15 and the second compensation unit 16 shown in FIG. 6 includes a second surface (reference number omitted) that is continuous with the third surface f3 without a step, and a third surface (reference number omitted) that is continuous with the fourth surface f4 without a step. Each of the fifth surface f5 (specifically, the plane in contact with the center in the width direction of the fifth surface f5) and the fourth surface (reference numeral omitted) that is continuous without a step is the first outer surface shown in FIG. The electrode 17 extends to the end of the second portion 17b. 6 includes a second surface (reference omitted) that is continuous with the third surface f3 without a step, and a third surface (reference omitted) that is continuous with the fourth surface f4 without a step. ), The fifth surface f5 (specifically, the plane in contact with the center in the width direction of the fifth surface f5) and the fourth surface (reference numeral omitted) that are continuous without a step are shown in FIG. The first external electrode 18 extends to the end of the second portion 18b. That is, the length direction dimension L1 of each of the first correction part 15 'and the second correction part 16' is substantially the same as the length direction dimension L1 shown in FIG.

  When such a 1st correction part 15 'and 2nd correction part 16' fill each 1st recessed part CP1 of the lamination direction one surface of the unbaking lamination sheet ULS shown in FIG. 3 (A) with a filler, It can be formed by simultaneously filling a portion close to each first recess CP1 in each second recess CP2 shown in FIG. 3B with the filler.

  If the multilayer ceramic capacitor shown in FIG. 5 is produced using the capacitor body 11 shown in FIG. 6, the entire outer surface of the second portion 17b of the first external electrode 17 can be made substantially flat, and The entire outer surface of the second portion 18b of the second external electrode 18 can be a substantially flat surface. Therefore, according to the multilayer ceramic capacitor using the capacitor body 11 shown in FIG. 6, it is possible to more effectively improve the posture failure when the multilayer ceramic capacitor is mounted on the circuit board.

  In the above-described embodiment, the sixth constriction surface f6a and the second constriction surface f6b are provided as the sixth surface f6 of the capacitor body 11, and the first constriction surface f6a and the second constriction surface f6b are provided. In the above description, the portion except for a convex curved surface in which the center in the width direction swells has been described. However, the sixth constricted surface f6a and the second constricted surface f6b are excluded from the sixth surface f6 of the capacitor body 11. Even if the entire surface f6 is a convex curved surface whose center in the width direction swells, or the entire sixth surface f6 is a substantially flat surface, the same effect as described above can be obtained.

  In the above-described embodiment, the width direction dimension of the first external electrode 12 and the width direction dimension of the second external electrode 13 are substantially matched with the width direction dimension (width W) of the capacitor body 11. Even if the width-direction dimensions of the first external electrode 17 and the second external electrode 18 are slightly smaller than the width W, the same effect as described above can be obtained. In addition, the position of the end of the first portion 17a of the first external electrode 17 reaches the boundary between the first surface f1 of the capacitor body 11 and the first constricted surface f6a of the sixth surface f6, and the second external electrode In the above description, the position of the end of the first portion 18a of 18 reaches the boundary between the second surface f2 and the second constricted surface f6b of the sixth surface f6, but the first portion 19a of the first external electrode 17 has been described. The end position of the second outer electrode 18 slightly exceeds the boundary between the first surface f1 of the capacitor body 11 and the first constricted surface f6a of the sixth surface f6, and the position of the end of the first portion 20a of the second external electrode 18 is Even if the boundary between the second surface f2 and the second constricted surface f6b of the sixth surface f6 is slightly exceeded, the same effect as described above can be obtained.

  11 ... capacitor body, f1 ... first surface of capacitor body, f2 ... second surface of capacitor body, f3 ... third surface of capacitor body, f4 ... fourth surface of capacitor body, f5 ... fifth surface of capacitor body, f5a ... first constricted surface of the fifth surface, f5b ... second constricted surface of the fifth surface, f6 ... sixth surface of the capacitor body, 12 ... first internal electrode layer, 13 ... second internal electrode layer, 14 ... dielectric layer, 15, 15 '... first compensation part, 16, 16' ... second compensation part, 17 ... first external electrode, 17a ... first part of first external electrode, 17b ... first external electrode The second portion, 17c: the portion of the first external electrode facing the first constricted surface of the fifth surface, 18: the second external electrode, 18a: the first portion of the second external electrode, 18b: the second portion of the second external electrode 2 part, 18c ... The part which faces the 2nd constriction surface of the 5th surface in the 2nd external electrode.

Claims (4)

(1) A first surface and a second surface facing in the length direction, a third surface and a fourth surface facing in the width direction, and a fifth surface and a sixth surface facing in the height direction, and a plurality of first interiors A capacitor body including a capacitor portion in which an electrode layer and a plurality of second internal electrode layers are laminated via a dielectric layer; and (2) a first portion and a fifth surface along the first surface of the capacitor body. A first external electrode having edges of each of the plurality of first internal electrode layers connected to the first portion, and (3) along the second surface of the capacitor body. A multilayer ceramic comprising: a first part and a second part extending along the fifth surface; and a second external electrode having edges of each of the plurality of second internal electrode layers connected to the first part. A capacitor,
A first constricted surface for reducing the height direction dimension of the first surface is provided across the entire width direction at an end of the fifth surface of the capacitor body on the first surface side, and the capacitor body has the first surface. A second constricted surface for reducing the height direction dimension of the second surface is provided across the entire width direction at the end of the fifth surface on the second surface side,
In order to adjust the cross-sectional shape of the portion of the first external electrode facing the first constricted surface between the first external electrode and the first constricted surface of the fifth surface of the capacitor body to a substantially right angle. A first correction portion, and a portion of the second external electrode facing the second constricted surface between the second external electrode and the second constricted surface of the fifth surface of the capacitor body. the second compensation unit for adjusting cross-sectional shape substantially in right angles are provided,
The material of the first compensation part and the material of the second compensation part are good conductors,
Multilayer ceramic capacitor. The same material as the first internal electrode layer and the second internal electrode layer is used for the material of the first compensation part and the material of the second compensation part,
The multilayer ceramic capacitor according to claim 1. The first constricted surface of the fifth surface of the capacitor main body is a convex curved surface that swells in the center in the width direction and is inclined toward the first surface, and the second constricted surface of the fifth surface. The side surface is a convex curved surface that swells in the center in the width direction and is inclined toward the second surface.
The multilayer ceramic capacitor according to claim 1 . A portion of the fifth surface of the capacitor body excluding the first constricted surface and the second constricted surface is a convex curved surface in which the center in the width direction swells.
Multilayer ceramic capacitor according to any one of claims 1-3.

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