Multilayer Ceramic Capacitors
A technology of ceramic capacitors and capacitors, which is applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve the problems of less absolute quantity, easy drop of bonding force, and difficult bonding of the base conductor film, and achieve the effect of reducing peeling
Active Publication Date: 2021-08-06
TAIYO YUDEN KK
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Problems solved by technology
Even so, when the thickness of the base conductor film is reduced, the absolute amount of the glass material and the common material contained in the base conductor film is reduced, so the bonding force tends to decrease compared with the case where the thickness is large.
In addition, there are cases where the thickness of the peripheral portion of the applied electrode paste becomes extremely small compared with the thickness of other portions. In such a case, the peripheral portion of the base conductor film becomes difficult to bond.
Method used
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[0047] First, use Figure 1 ~ Figure 3 , the structure of the multilayer ceramic capacitor 10 to which the present invention is applied will be described. In this description, the figure 1 The left-right direction of is recorded as the length direction, and the figure 1 The up and down direction of is recorded as the width direction, and the figure 2 The up-and-down direction of is denoted as the height direction, and the dimensions along these lengthwise, widthwise and height directions, respectively, are denoted as length, width and height.
[0048] Figure 1 ~ Figure 3 The dimensions of the illustrated laminated ceramic capacitor 10 are specified by a length L, a width W and a height H. As shown in FIG. For reference, as Figure 1 ~ Figure 3 The actual dimensions of the length L, width W and height H of the first test piece of the foundation are 600 μm, 300 μm and 300 μm respectively, and the actual dimensions of the length L, width W and height H of the second test p...
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Abstract
The present invention provides a laminated ceramic capacitor capable of reducing the possibility of peeling the expanded portion from the capacitor main body even when the thickness of the expanded portion of the external electrode is reduced, the laminated ceramic capacitor has an auxiliary dielectric layer having a cover capacitive element The first covering part of the part between the two first base conductor films on each of the two surfaces in the height direction and the second covering part continuous with the first cover part and covering a part of the length direction of each of the first base conductor films, each The external electrode has: a second base conductor film attached to the longitudinal surface of the capacitive element and the longitudinal ends of the two first base conductor films; and continuously attached to the surface of the second base conductor film and the two first base conductor films. A surface conductor film of a surface portion of a base conductor film not covered by the second covering part.
Description
technical field [0001] The present invention relates to a multilayer ceramic capacitor in which an external electrode has an extended portion extending to at least one surface of a capacitor body in the height direction. Background technique [0002] The dimensions of a multilayer ceramic capacitor are defined by length, width, and height, where the height refers to the dimension along the stacking direction of the internal electrode layers. In addition, a laminated ceramic capacitor generally includes: a capacitor body having a substantially rectangular parallelepiped shape having a capacitor portion in which a plurality of internal electrode layers are stacked via a dielectric layer; A pair of external electrodes with alternately connected electrode layers. [0003] However, when the external electrode has an extended portion that extends to at least one surface of the capacitor body in the height direction, a method of reducing the thickness of the extended portion is kn...
Claims
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IPC IPC(8): H01G4/005H01G4/12H01G4/30
CPCH01G4/005H01G4/1227H01G4/1245H01G4/30H01G4/12H01G4/232H01G4/2325H01G4/224H01G4/306H01G2/103H01G4/1209H01G4/008
Inventor 佐藤壮饭岛淑明笹木隆
Owner TAIYO YUDEN KK