MULTILAYER CAPACITOR

• Main Authors: BYUN MAN SU, JEONG DAE HEON, SONG SOO-HOWANG, SIM WON CHUL
• Format: Patent
• Language: English; Japanese
• Published: 23.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

To provide a multilayer capacitor which can reduce acoustic noise.SOLUTION: A multilayer capacitor includes: a main body including a lamination structure in which a first internal electrode and a second internal electrode are laminated in a first direction with a dielectric layer interposed therebetween; a first external electrode 131 and a second external electrode 132 coupled to the first internal electrode and the second internal electrode, respectively; and a noise reducing insulation layer 140 covering a surface of the main body and surfaces of the first and second external electrodes. In a direction where the surfaces of the first and second external electrodes face each other, a value obtained by dividing a sum of lengths of the first and second external electrodes by 2 is defined as BW1. In a direction parallel to a direction of BW1, a length of the noise reducing insulation layer is defined as L. In a direction perpendicular to the surface of the main body, a thickness of a portion, of the noise reducing insulation layer, covering the main body is defined as T1. In a direction parallel to a direction of T1, a thickness of the surfaces of the first and second external electrodes is defined as T2. Here, [{(L×T1)-(BW1×T2)}/(L×T1)] exceeds 0.9448 but is lower than 1.SELECTED DRAWING: Figure 4 【課題】アコースティックノイズを低減させる積層型キャパシタを提供する。【解決手段】第１内部電極と第２内部電極とが誘電体層を間に挟んで第１方向に積層された積層構造を含む本体と、第１内部電極及び第２内部電極に夫々連結される第１外部電極１３１及び第２外部電極１３２と、本体の一面と第１、第２外部電極の一面とを共にカバーする騒音低減絶縁層１４０とを含む。第１、第２外部電極の一面で互いに相対する方向において、第１、第２外部電極のそれぞれの長さの和を２で除した値はＢＷ１であり、ＢＷ１の方向と平行な方向において、騒音低減絶縁層の長さはＬであり、本体の一面に垂直な方向において、騒音低減絶縁層における本体をカバーする部分の厚さはＴ１であり、Ｔ１の方向と平行な方向において、第１、第２外部電極の一面における厚さはＴ２であり、［｛（Ｌ×Ｔ１）－（ＢＷ１×Ｔ２）｝／（Ｌ×Ｔ１）］は０．９４４８超過１未満である。【選択図】図４