JPWO2014017365A1 - 積層型ptcサーミスタ素子 - Google Patents
積層型ptcサーミスタ素子 Download PDFInfo
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- JPWO2014017365A1 JPWO2014017365A1 JP2014526879A JP2014526879A JPWO2014017365A1 JP WO2014017365 A1 JPWO2014017365 A1 JP WO2014017365A1 JP 2014526879 A JP2014526879 A JP 2014526879A JP 2014526879 A JP2014526879 A JP 2014526879A JP WO2014017365 A1 JPWO2014017365 A1 JP WO2014017365A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
- H01C7/023—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
- H01C7/025—Perovskites, e.g. titanates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/012—Mounting; Supporting the base extending along and imparting rigidity or reinforcement to the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/008—Thermistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/021—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient formed as one or more layers or coatings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/785—Submicron sized grains, i.e. from 0,1 to 1 micron
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
まず、以下の説明の便宜のため、図1A,図1Bに示すX軸、Y軸およびZ軸を定義する。X軸、Y軸およびZ軸は、積層型PTCサーミスタ素子1の左右方向、前後方向および上下方向を示す。
図1Aには、表面実装型の積層型PTCサーミスタ素子1の完成品が例示される。この積層型PTCサーミスタ素子1は、セラミック基体2と、複数の内部電極3と、二個一対の外部電極4a,4bと、第一メッキ膜5a,5bと、第二メッキ膜6a,6bとを備える。
上記積層型PTCサーミスタ素子1の製造工程は、大略的には、下記の第一工程〜第八工程からなる。
(Ba1-xSmx)yTiO3 …(1)
ここで、xはSmのBaに対する添加量のモル比を示す。また、yは、BaTiO3系セラミックにおけるBaサイトのTiサイトに対するモル比(Baサイト/Tiサイト)を示す。本実施形態では、xは0.0005〜0.0040であり、yは0.990〜1.005である。
セラミック基体3の設計目標値:長さL=2.0[mm],幅W=1.2[mm],厚さT=1.0[mm]
セラミック基体3の材料:BaTiO3を主成分とする誘電体セラミックス
焼成後のセラミック層21の厚み:24[μm]
内部電極3の材質:Ni
焼成後の内部電極3の厚み:1[μm]
隣接する二個の内部電極3の間の距離:30[μm]
内部電極3の総枚数:24[枚]
外部電極4a,4bの最下層の材質:厚さ0.13[μm]のNiCr合金
外部電極4a,4bの中間層の材質:厚さ1.2[μm]のNiCu合金
外部電極4a,4bの最上層の材質:厚さ0.8[μm]のAg
第一メッキ膜5a,5bの材質:Ni
第二メッキ膜6a,6bの材質:Sn
本件発明者は、上記製法の諸条件を変更することで、19種類の完成品(以下、それぞれを試料1〜19という場合がある)を作製し、それぞれのセラミック基体の平均磁器粒径(平均結晶粒径)dを求めた。平均磁器粒径dの定義および求め方は以下の通りである。
上記実施形態では、表面実装型のPTCサーミスタ素子について説明した。しかし、PTCサーミスタ素子のプリント基板への実装方法は、表面実装型に限らず、BGA(BallGrid Array)型でも構わない。
2 セラミック基体
21 セラミック層
3 複数の内部電極
3a,3b 内部電極群
4a,4b 外部電極
5a,5b 第一メッキ膜
6a,6b 第二メッキ膜
Claims (2)
- 複数のセラミック層からなるセラミック基体と、
前記セラミック基体内に形成された複数の内部電極と、
前記内部電極と電気的に導通し、前記セラミック基体の表面上に形成された外部電極と、を備え、
前記セラミック基体の平均磁器粒径は、0.3[μm]以上、1.2[μm]以下であり、
前記セラミック基体の相対密度の下限値は70[%]であり、
前記セラミック基体の相対密度の上限値は、前記平均磁器粒径をdとおくと、−6.43d+97.83[%]である、積層型PTCサーミスタ素子。 - 室温比抵抗が30[Ωcm]以下で、耐電圧が730[V/mm]以上である、請求項1に記載の積層型PTCサーミスタ素子。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012164384 | 2012-07-25 | ||
JP2012164384 | 2012-07-25 | ||
PCT/JP2013/069459 WO2014017365A1 (ja) | 2012-07-25 | 2013-07-18 | 積層型ptcサーミスタ素子 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2014017365A1 true JPWO2014017365A1 (ja) | 2016-07-11 |
JP5970717B2 JP5970717B2 (ja) | 2016-08-17 |
Family
ID=49997179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014526879A Active JP5970717B2 (ja) | 2012-07-25 | 2013-07-18 | 積層型ptcサーミスタ素子 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9530547B2 (ja) |
EP (1) | EP2879137A4 (ja) |
JP (1) | JP5970717B2 (ja) |
CN (1) | CN104428847B (ja) |
TW (1) | TWI478182B (ja) |
WO (1) | WO2014017365A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10790075B2 (en) | 2018-04-17 | 2020-09-29 | Avx Corporation | Varistor for high temperature applications |
TWI684189B (zh) * | 2018-09-27 | 2020-02-01 | 聚鼎科技股份有限公司 | 正溫度係數元件 |
JP7393928B2 (ja) * | 2019-11-29 | 2023-12-07 | 日本碍子株式会社 | セラミックス体及びヒーターエレメント |
JP7434863B2 (ja) * | 2019-12-06 | 2024-02-21 | Tdk株式会社 | Ntcサーミスタ素子 |
TWI723814B (zh) * | 2020-03-20 | 2021-04-01 | 興勤電子工業股份有限公司 | 陶瓷組成物、陶瓷燒結體及疊層型陶瓷電子元件 |
DE102021213863A1 (de) | 2021-01-15 | 2022-07-21 | Ngk Insulators, Ltd. | Keramikkörper und verfahren zu dessen herstellung, heizelement, heizeinheit, heizsystem sowie reinigungssytem |
WO2023100538A1 (ja) * | 2021-12-03 | 2023-06-08 | 株式会社村田製作所 | チップ型電子部品 |
JP2023141203A (ja) | 2022-03-23 | 2023-10-05 | 日本碍子株式会社 | セラミックス体、ハニカム構造体、セラミックス体の製造方法、及びヒーターエレメント |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0745402A (ja) * | 1993-07-28 | 1995-02-14 | Murata Mfg Co Ltd | 積層ptcサーミスタ |
JP2001130957A (ja) * | 1999-11-02 | 2001-05-15 | Murata Mfg Co Ltd | 半導体磁器、半導体磁器の製造方法およびサーミスタ |
JP2002043103A (ja) * | 2000-05-15 | 2002-02-08 | Murata Mfg Co Ltd | 積層型半導体セラミック素子およびその製造方法 |
JP2012059786A (ja) * | 2010-09-06 | 2012-03-22 | Tdk Corp | セラミック積層ptcサーミスタ |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3608599B2 (ja) | 1997-10-09 | 2005-01-12 | 株式会社村田製作所 | チタン酸バリウム系半導体磁器 |
JP3039511B2 (ja) * | 1998-04-13 | 2000-05-08 | 株式会社村田製作所 | 半導体セラミックおよび半導体セラミック素子 |
JP2001167904A (ja) * | 1999-12-09 | 2001-06-22 | Murata Mfg Co Ltd | 半導体磁器およびそれを用いた電子部品 |
WO2008038538A1 (fr) * | 2006-09-28 | 2008-04-03 | Murata Manufacturing Co., Ltd. | Composition de porcelaine semiconductrice de titanate de baryum et dispositif ptc utilisant celle-ci |
WO2010067867A1 (ja) * | 2008-12-12 | 2010-06-17 | 株式会社 村田製作所 | 半導体セラミック及び正特性サーミスタ |
WO2010067868A1 (ja) * | 2008-12-12 | 2010-06-17 | 株式会社 村田製作所 | 半導体セラミック及び正特性サーミスタ |
CN101728039B (zh) * | 2009-12-31 | 2016-02-24 | 上海长园维安电子线路保护有限公司 | 过电流保护元件 |
JPWO2013065372A1 (ja) * | 2011-11-01 | 2015-04-02 | 株式会社村田製作所 | チタン酸バリウム系半導体セラミックおよびそれを用いたptcサーミスタ |
TWI440616B (zh) * | 2012-02-07 | 2014-06-11 | Polytronics Technology Corp | 過電流保護元件 |
-
2013
- 2013-07-18 WO PCT/JP2013/069459 patent/WO2014017365A1/ja active Application Filing
- 2013-07-18 EP EP13823279.8A patent/EP2879137A4/en not_active Withdrawn
- 2013-07-18 JP JP2014526879A patent/JP5970717B2/ja active Active
- 2013-07-18 CN CN201380036109.4A patent/CN104428847B/zh active Active
- 2013-07-24 TW TW102126547A patent/TWI478182B/zh active
-
2014
- 2014-12-10 US US14/565,495 patent/US9530547B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0745402A (ja) * | 1993-07-28 | 1995-02-14 | Murata Mfg Co Ltd | 積層ptcサーミスタ |
JP2001130957A (ja) * | 1999-11-02 | 2001-05-15 | Murata Mfg Co Ltd | 半導体磁器、半導体磁器の製造方法およびサーミスタ |
JP2002043103A (ja) * | 2000-05-15 | 2002-02-08 | Murata Mfg Co Ltd | 積層型半導体セラミック素子およびその製造方法 |
JP2012059786A (ja) * | 2010-09-06 | 2012-03-22 | Tdk Corp | セラミック積層ptcサーミスタ |
Also Published As
Publication number | Publication date |
---|---|
EP2879137A1 (en) | 2015-06-03 |
TW201409495A (zh) | 2014-03-01 |
EP2879137A4 (en) | 2015-12-02 |
US9530547B2 (en) | 2016-12-27 |
CN104428847A (zh) | 2015-03-18 |
WO2014017365A1 (ja) | 2014-01-30 |
US20150091690A1 (en) | 2015-04-02 |
JP5970717B2 (ja) | 2016-08-17 |
TWI478182B (zh) | 2015-03-21 |
CN104428847B (zh) | 2018-01-26 |
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