公开(公告)号：US20190221344A1

公开(公告)日：2019-07-18

申请号：US16234921

申请日：2018-12-28

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Yukio TAKAHASHI ,  Takashi SUZUKI ,  Hiroyuki TANOUE ,  Masashi SHIMOYASU ,  Masahiro KATO

IPC: H01F1/36 ,  H01F27/28 ,  H01F41/04 ,  H01F27/40 ,  C04B35/26

CPC classification number: H01F1/36 ,  C04B35/265 ,  C04B2235/3244 ,  C04B2235/3274 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/786 ,  C04B2235/96 ,  H01F27/2804 ,  H01F27/40 ,  H01F41/043 ,  H01F2027/2809

Abstract: A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of Fe2O3, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of B2O3 with respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 μm.

公开(公告)号：US20200243239A1

公开(公告)日：2020-07-30

申请号：US16727553

申请日：2019-12-26

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Takashi SUZUKI ,  Takahiro SATO ,  Kenji KOMORITA ,  Tatsuro SUZUKI ,  Yukio TAKAHASHI ,  Hiroyuki TANOUE ,  Yasuhiro ITO

IPC: H01F1/34 ,  C04B35/26

Abstract: A ferrite composition includes a main component and a sub-component. The main component includes 10.0 to 38.0 mol % of a Fe compound in terms of Fe2O3, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound. The sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO2, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of Co3O4, and 0.1 to 3.0 parts by weight of a Bi compound in terms of Bi2O3 with respect to 100 parts by weight of the main component.

公开(公告)号：US20140204499A1

公开(公告)日：2014-07-24

申请号：US14223385

申请日：2014-03-24

Applicant: TDK Corporation

Inventor： Hidenobu UMEDA ,  Makoto YOSHINO ,  Takahiro SATO ,  Takuo HATTORI ,  Shinichi SATO ,  Takeshi SHIBAYAMA

IPC: H05F3/04

CPC classification number: H05F3/04 ,  H01G4/40 ,  H01T2/00 ,  H01T4/12 ,  H05K9/0067 ,  H05K9/0079

Abstract: An electrostatic protection component includes: a body in which a plurality of ceramic substrates is laminated; and a pair of discharge electrodes which are formed within the body and which are spaced to face each other. The discharge electrodes include main body portions extending along a longitudinal direction, and the main body portions include tips in the longitudinal direction and side edges extending along the longitudinal direction. The pair of discharge electrodes are arranged such that both the main body portions are adjacent to each other in a short direction. The discharge electrodes face each other in the short direction between the side edges, and discharge occurs only between the side edges, between the discharge electrodes.

Abstract translation: 静电保护部件包括：层叠有多个陶瓷基板的主体; 以及一对放电电极，其形成在主体内并且彼此间隔开。 放电电极包括沿着纵向方向延伸的主体部分，并且主体部分包括沿纵向方向的尖端和沿着纵向方向延伸的侧边缘。 一对放电电极被布置成使得两个主体部分在短方向上彼此相邻。 放电电极在侧边缘之间在短的方向上彼此面对，并且放电仅在放电电极之间的侧边缘之间发生。

公开(公告)号：US20160293301A1

公开(公告)日：2016-10-06

申请号：US15089992

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki CHOTO ,  Takeshi SHIBAYAMA ,  Takashi SUZUKI ,  Shinichi KONDO ,  Yuya OSHIMA ,  Masaki TAKAHASHI

IPC: H01F1/03 ,  H01F27/29 ,  H01F27/28

CPC classification number: H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/292 ,  H01F2017/048

Abstract: Provided is a composite ferrite composition including a magnetic substance material and a nonmagnetic substance material. The magnetic substance material is Ni—Cu—Zn based ferrite. The nonmagnetic substance material comprises a low dielectric constant nonmagnetic substance material, which is shown by a general formula: a(bZnO.cCuO).SiO2 and satisfies a=1.5 to 2.4, b=0.85 to 0.98, c=0.02 to 0.15, and b+c=1.00 in said general formula, and a bismuth oxide. A mixing ratio of the magnetic substance material and the low dielectric constant nonmagnetic substance material is 80 wt %:20 wt % to 10 wt %:90 wt %.

Abstract translation: 提供一种包含磁性物质材料和非磁性物质材料的复合铁氧体组合物。 磁性物质是Ni-Cu-Zn系铁氧体。 非磁性物质材料包括低介电常数非磁性物质材料，其通式为a（bZnO.cCuO）·SiO2，满足a = 1.5〜2.4，b = 0.85〜0.98，c = 0.02〜0.15， 所述通式中的b + c = 1.00，和氧化铋。 磁性体材料和低介电常数非磁性物质的混合比为80重量％：20重量％〜10重量％：90重量％。

公开(公告)号：US20200258668A1

公开(公告)日：2020-08-13

申请号：US16750434

申请日：2020-01-23

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Takashi SUZUKI ,  Yukio TAKAHASHI

IPC: H01F1/34 ,  H01F27/255 ,  H01F17/00 ,  C04B35/26

Abstract: A ferrite composition includes main-phase particles, first sub-phase particles, second sub-phase particles, and a grain boundary. At least 10% or more of the main-phase particles contain a portion whose Zn concentrations monotonously decrease from a particle surface toward a particle central part along a length of 50 nm or more. The first sub-phase particles contain Zn2SiO4. The second sub-phase particles contain SiO2. A total area ratio of the first sub-phase particles and the second sub-phase particles is 30.5% or more.

公开(公告)号：US20180096768A1

公开(公告)日：2018-04-05

申请号：US15708625

申请日：2017-09-19

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Asuka MURAI ,  Yukio TAKAHASHI ,  Takashi SUZUKI ,  Hiroyuki TANOUE ,  Masaki TAKAHASHI

IPC: H01F1/34 ,  H01F41/04 ,  H01F17/00 ,  C04B35/26

CPC classification number: H01F1/344 ,  C04B35/265 ,  C04B35/6261 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/94 ,  H01F17/0013 ,  H01F41/046

Abstract: A ferrite composition includes a main component and an accessory component. The main component includes 18 to 30 mol % of iron oxide in terms of Fe2O3, 4 to 14 mol % of copper oxide in terms of CuO, 0 to 6 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.30 to 1.83 pts.wt. of silicon compound in terms of SiO2, 2.00 to 10.00 pts.wt. of cobalt compound in terms of Co3O4, and 1.00 to 3.00 pts.wt. of bismuth compound in terms of Bi2O3 with respect to 100 pts.wt. of the main component. A cobalt compound content in terms of Co3O4 divided by a silicon compound content in terms of SiO2 is a value of 5.5 to 30.0.

公开(公告)号：US20160300651A1

公开(公告)日：2016-10-13

申请号：US15090196

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki CHOTO ,  Takeshi SHIBAYAMA ,  Ryuichi WADA ,  Kouichi KAKUDA ,  Yukari AKITA ,  Asuka MURAI ,  Yukio TAKAHASHI ,  Takashi SUZUKI ,  Akinori OHI

IPC: H01F1/34 ,  H01F27/28

CPC classification number: H01F41/0246 ,  C04B35/26 ,  C04B35/2666 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/62695 ,  C04B2235/3244 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  C04B2235/94 ,  H01F1/344 ,  H01F27/2804 ,  H01F2027/2809

Abstract: A ferrite composition composed of a main component including 26 to 46 mol % of an iron oxide in terms of Fe2O3, 4 to 14 mol % of a copper oxide in terms of CuO, 0 to 26 mol % of a zinc oxide in terms of ZnO, and a residue of 40.0 mol % or more of a nickel oxide in terms of NiO. The ferrite composition, with respect to 100 parts by weight of the main component, is also composed of a subcomponent including 0.8 to 10.0 parts by weight of a silicon compound in terms of SiO2, 1.0 to 15.0 parts by weight of a cobalt compound in terms of Co3O4, and 0.7 to 30.0 parts by weight of a bismuth compound in terms of Bi2O3. A value of the cobalt compound content in terms of Co3O4 divided by the silicon compound content in terms of SiO2 is 0.4 to 5.5.

Abstract translation: 由以Fe 2 O 3计的氧化铁为26〜46摩尔％，CuO换算为氧化铜为4〜14摩尔％，ZnO为0〜26摩尔％的氧化锌为主成分的铁素体组合物 ，NiO为40.0摩尔％以上的氧化镍的残渣。 相对于100重量份的主成分，铁素体组合物也由以SiO 2为0.8〜10.0重量份的硅化合物，以化合物计1.0〜15.0重量份的化合物构成的副成分 的Co 3 O 4和0.7〜30.0重量份的Bi 2 O 3换算的铋化合物。 以Co 3 O 4计的钴化合物含量除以硅化合物含量换算成SiO 2的值为0.4〜5.5。

公开(公告)号：US20150189727A1

公开(公告)日：2015-07-02

申请号：US14569285

申请日：2014-12-12

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Hidenobu UMEDA

IPC: H05F3/04 ,  H01B1/02 ,  H01B3/12

CPC classification number: H05F3/04 ,  H01T4/12 ,  H05K9/0067

Abstract: An ESD (ElectroStatic Discharge) protection component has: first and second discharge electrodes arranged so as to be opposed to each other through a gap; and a discharge inducing portion kept in contact with the first and second discharge electrodes and configured to connect the first and second discharge electrodes to each other. The discharge inducing portion has metal particles, a ceramic material containing glass, and a dielectric material having a dielectric constant higher than that of the ceramic material. A content of the dielectric material is in the range of 7.5 to 40% by volume, with respect to a total volume of the ceramic material and the dielectric material.

Abstract translation: ESD（静电放电）保护部件具有：通过间隙配置成彼此相对的第一和第二放电电极; 以及与第一和第二放电电极保持接触并且被配置为将第一和第二放电电极彼此连接的放电诱导部分。 放电诱导部分具有金属颗粒，含玻璃的陶瓷材料和介电常数高于陶瓷材料的电介质材料。 介电材料的含量相对于陶瓷材料和电介质材料的总体积为7.5〜40体积％。