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公开(公告)号：US20220301748A1
公开(公告)日：2022-09-22
申请号：US17635841
申请日：2020-09-28
Applicant: TDK CORPORATION
Inventor： Daisuke TSUCHIDA , Takehiko ABE , Yoshihiko SATOH , Koki YAMADA
Abstract: An NTC thermistor element is of less than 0402 size. A first internal electrode is connected to a first external electrode. A second internal electrode is separated from the first internal electrode and is connected to a second external electrode. A third internal electrode opposes the first and second internal electrodes and is not connected to the first external electrode and the second external electrode. A shortest distance between the first internal electrode and the third internal electrode and a shortest distance between the second internal electrode and the third internal electrode are smaller than a shortest distance between the first internal electrode and the second internal electrode, a shortest distance between the first external electrode and the third internal electrode, and a shortest distance between the second external electrode and the third internal electrode, and are less than or equal to ¼ the thickness of the thermistor body.
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公开(公告)号：US20140125448A1
公开(公告)日：2014-05-08
申请号：US14061238
申请日：2013-10-23
Applicant: TDK CORPORATION
Inventor： Daisuke TSUCHIDA , Yo SAITO , Kouki YAMADA
IPC: H01C7/00
CPC classification number: H01C7/008 , H01C1/148 , H01C17/006 , H01C17/283 , H01G4/2325
Abstract: A chip thermistor comprises a thermistor element body and a pair of outer electrodes. The thermistor element body has a pair of end faces opposing each other and a main face connecting the end faces to each other. The pair of outer electrodes are arranged on the pair of end faces, respectively. The pair of outer electrodes have a width in a direction intersecting the opposing direction of the pair of end faces made narrower with distance from the thermistor element body.
Abstract translation: 片式热敏电阻包括热敏电阻元件本体和一对外电极。 热敏电阻元件主体具有彼此相对的一对端面和将端面彼此连接的主面。 一对外电极分别设置在一对端面上。 一对外部电极在与热敏电阻元件主体的距离变窄的方向上与所述一对端面的相对方向相交的方向具有宽度。
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公开(公告)号：US20150028992A1
公开(公告)日：2015-01-29
申请号：US14514738
申请日：2014-10-15
Applicant: TDK Corporation
Inventor： Yo SAITO , Kouki YAMADA , Daisuke TSUCHIDA
CPC classification number: H01C7/008 , H01C1/1413 , H01C7/023 , H01C7/04 , H01C7/043 , H01C17/00 , H01C17/006 , Y10T29/49085
Abstract: A chip thermistor 1 has a thermistor portion 7 comprised of a ceramic material containing respective metal oxides of Mn, Ni, and Co as major ingredients; a pair of composite portions 9, 9 comprised of a composite material of Ag—Pd, and respective metal oxides of Mn, Ni, and Co and arranged on both sides of the thermistor portion 7 so as to sandwich in the thermistor portion 7 between the composite portions 9, 9; and external electrodes 5, 5 connected to the pair of composite portions 9, 9, respectively. In this manner, the pair of composite portions 9, 9 are used as bulk electrodes and, for this reason, the resistance of the chip thermistor 1 can be adjusted mainly with consideration to the resistance in the thermistor portion 7, without need for much consideration to the distance between the external electrodes 5, 5 and other factors.
Abstract translation: 片式热敏电阻1具有热敏电阻部7，其由含有Mn，Ni，Co的各种金属氧化物的陶瓷材料构成，作为主要成分; 由Ag-Pd的复合材料和Mn，Ni和Co的各种金属氧化物构成的一对复合部分9,9，并且布置在热敏电阻部分7的两侧，以夹在热敏电阻部分7之间 复合部分9,9; 以及分别与一对复合部9,9连接的外部电极5,5。 以这种方式，一对复合部分9,9被用作体电极，为此，可以主要考虑到热敏电阻部分7中的电阻来调整芯片热敏电阻1的电阻，而不需要太多考虑 到外部电极5,5之间的距离等因素。
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公开(公告)号：US20220301749A1
公开(公告)日：2022-09-22
申请号：US17636217
申请日：2020-11-27
Applicant: TDK CORPORATION
Inventor： Daisuke TSUCHIDA , Takehiko ABE , Yoshihiko SATOH , Shingo YASUDA , Yuki IKEDA , Makikazu TAKEHANA
Abstract: An NTC thermistor element includes a thermistor body and a plurality of internal electrodes disposed in the thermistor body and opposing each other. The thermistor body includes a region interposed between adjacent internal electrodes of the plurality of internal electrodes. The region of the thermistor body includes a plurality of crystal grains arranged in succession between the internal electrodes adjacent to each other. The plurality of crystal grains include a first crystal grain, a second crystal grain, and a third crystal grain. The first crystal grain is in contact with one internal electrode of the internal electrodes adjacent to each other. The second crystal grain is in contact with another internal electrode of the internal electrodes adjacent to each other. The third crystal grain is not in contact with the first crystal grain and the second crystal grain.
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