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    Semiconductor ceramic and positive temperature coefficient thermistor
    1.
    发明授权
    Semiconductor ceramic and positive temperature coefficient thermistor 有权
    半导体陶瓷和正温度系数热敏电阻

    公开(公告)号：US08350662B2

    公开(公告)日：2013-01-08

    申请号：US13154601

    申请日：2011-06-07

    申请人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    发明人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    IPC分类号： H01C7/10

    CPC分类号： H01C7/025 ,  C04B35/46 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3262 ,  C04B2235/3298 ,  C04B2235/6584 ,  C04B2235/79

    摘要： A semiconductor ceramic includes a BamTiO3-based composition, as a main component, having a perovskite structure represented by general formula AmBO3, wherein part of Ba constituting the A site is replaced with Na, Bi, Ca, and a rare-earth element having an ionic radius smaller than that of the Na; the content of the rare-earth element when the total number of moles of the elements constituting the A site is 1 mole is 0.0005 to 0.015 on a molar basis; and the content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 or more and 0.175 or less) on a molar basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, high reliability is achieved even if an alkali metal element is present.

    摘要翻译： 半导体陶瓷包括作为主要成分的作为主要成分的具有由通式AmBO 3表示的钙钛矿结构的基于BamTiO 3的组合物，其中构成A位点的Ba的一部分被Na，Bi，Ca和具有 离子半径小于Na; 当构成A位点的元素的总摩尔数为1摩尔时，稀土元素的含量为摩尔计为0.0005〜0.015。 当构成A位点的元素的总摩尔数为1摩尔时，Ca的含量为摩尔为0.05〜0.20（优选为0.125以上且0.175以下）。 PTC热敏电阻包括由半导体陶瓷形成的部件主体1。 因此，即使存在碱金属元素，也可实现高的可靠性。

    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
    4.
    发明申请
    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR 有权
    半导体陶瓷和积极温度系数热敏电阻

    公开(公告)号：US20110234364A1

    公开(公告)日：2011-09-29

    申请号：US13154601

    申请日：2011-06-07

    申请人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    发明人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    IPC分类号： H01C7/02 ,  H01B1/02

    CPC分类号： H01C7/025 ,  C04B35/46 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3262 ,  C04B2235/3298 ,  C04B2235/6584 ,  C04B2235/79

    摘要： A semiconductor ceramic includes a BamTiO3-based composition, as a main component, having a perovskite structure represented by general formula AmBO3, wherein part of Ba constituting the A site is replaced with Na, Bi, Ca, and a rare-earth element having an ionic radius smaller than that of the Na; the content of the rare-earth element when the total number of moles of the elements constituting the A site is 1 mole is 0.0005 to 0.015 on a molar basis; and the content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 or more and 0.175 or less) on a molar basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, high reliability is achieved even if an alkali metal element is present.

    摘要翻译： 半导体陶瓷包括作为主要成分的作为主要成分的具有由通式AmBO 3表示的钙钛矿结构的基于BamTiO 3的组合物，其中构成A位的Ba的一部分被Na，Bi，Ca和具有 离子半径小于Na; 当构成A位点的元素的总摩尔数为1摩尔时，稀土元素的含量为摩尔计为0.0005〜0.015。 当构成A位点的元素的总摩尔数为1摩尔时，Ca的含量为摩尔为0.05〜0.20（优选为0.125以上且0.175以下）。 PTC热敏电阻包括由半导体陶瓷形成的部件主体1。 因此，即使存在碱金属元素，也可实现高的可靠性。