公开(公告)号：EP1189248A3

公开(公告)日：2002-03-27

申请号：EP01120755.2

申请日：2001-09-06

Applicant: TDK Corporation

Inventor： Sezai, Yuji ,  Hirai, Ippou

IPC: H01F27/255 ,  H01F19/08

CPC classification number: H01F1/344 ,  H01F3/08 ,  H01F19/08 ,  H01F27/255

Abstract: A magnetic core composition for an xDSL modem transformer having a main component comprised of MnO: 22.0 to 34.5 mol% and ZnO: 12.0 to 25.0 mol% and the rest of substantially Fe 2 O 3 . With a magnetic core for a transformer made of this composition, the THD of the transformer becomes not more than -80 dB in a broad frequency band, so this can be used advantageously as the magnetic core for an xDSL modem transformer.

公开(公告)号：EP2871649B1

公开(公告)日：2016-12-28

申请号：EP14192109.8

申请日：2014-11-06

Applicant: TDK Corporation

Inventor： Takeda, Saori ,  Kaneko, Toshihiko ,  Yamashita, Yuki ,  Sezai, Yuji

IPC: H01G4/33 ,  H01G4/12 ,  H01L49/02 ,  H01G4/08

CPC classification number: C04B35/453 ,  C04B35/16 ,  C04B2235/3298 ,  C04B2235/3427 ,  C04B2235/604 ,  C04B2235/6567 ,  C04B2235/80 ,  H01G4/085 ,  H01G4/1209 ,  H01G4/1272 ,  H01G4/33 ,  H01L28/55

公开(公告)号：EP1189248A2

公开(公告)日：2002-03-20

申请号：EP01120755.2

申请日：2001-09-06

Applicant: TDK Corporation

Inventor： Sezai, Yuji ,  Hirai, Ippou

IPC: H01F27/255

CPC classification number: H01F1/344 ,  H01F3/08 ,  H01F19/08 ,  H01F27/255

Abstract: A magnetic core composition for an xDSL modem transformer having a main component comprised of MnO: 22.0 to 34.5 mol% and ZnO: 12.0 to 25.0 mol% and the rest of substantially Fe 2 O 3 . With a magnetic core for a transformer made of this composition, the THD of the transformer becomes not more than -80 dB in a broad frequency band, so this can be used advantageously as the magnetic core for an xDSL modem transformer.

Abstract translation: 一种用于xDSL调制解调器变压器的磁芯组合物，其主要组分包括MnO：22.0至34.5mol％，ZnO：12.0至25.0mol％，其余基本上为Fe2O3。 使用由该组合物制成的变压器的磁芯，变压器的THD在宽频带中变为不超过-80dB，因此可以有利地用作用于xDSL调制解调器变压器的磁芯。

公开(公告)号：EP2924693A3

公开(公告)日：2015-10-07

申请号：EP15159883.6

申请日：2015-03-19

Applicant: TDK Corporation

Inventor： Masaoka, Raitarou ,  Kaneko, Toshihiko ,  Yamashita, Yuki ,  Uchiyama, Hiroki ,  Takeda, Saori ,  Sezai, Yuji ,  Ootsuki, Shirou

IPC: H01B3/12

CPC classification number: C04B35/49 ,  C04B35/47 ,  C04B35/48 ,  C04B35/486 ,  C04B35/638 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/6562 ,  C04B2235/79 ,  C04B2235/80 ,  H01B3/12

Abstract: A dielectric composition contains major components that are an A-group containing major components that are at least two selected from the group consisting of Ba, Ca, and Sr and a B-group which contains a major component that is selected from Zr and Ti and which contains at least Zr. The dielectric composition contains an amorphous substance containing the A-group and the B-group and a crystalline substance containing the A-group and the B-group. In the dielectric composition, the inequality 0.5 ≤ α ≤ 1.5 holds, where α is the molar ratio of the A-group to the B-group.

Abstract translation: 电介质组合物含有作为含有主要成分的主要成分的主成分，所述主成分为选自Ba，Ca和Sr中的至少两种，以及含有选自Zr和Ti的主要成分的B基，以及 其至少包含Zr。 电介质组合物含有含有A基团和B基团的无定形物质和含有A基团和B基团的结晶物质。 在电介质组成中，不等式为0.5‰±‰¤1.5，其中±是A组与B组的摩尔比。

公开(公告)号：EP2871649A1

公开(公告)日：2015-05-13

申请号：EP14192109.8

申请日：2014-11-06

Applicant: TDK Corporation

Inventor： Takeda, Saori ,  Kaneko, Toshihiko ,  Yamashita, Yuki ,  Sezai, Yuji

IPC: H01G4/33 ,  H01G4/12 ,  H01L49/02 ,  H01G4/08

CPC classification number: C04B35/453 ,  C04B35/16 ,  C04B2235/3298 ,  C04B2235/3427 ,  C04B2235/604 ,  C04B2235/6567 ,  C04B2235/80 ,  H01G4/085 ,  H01G4/1209 ,  H01G4/1272 ,  H01G4/33 ,  H01L28/55

Abstract: A dielectric composition containing a crystalline phase represented by a general formula of Bi 12 SiO 20 and a crystalline phase represented by a general formula of Bi 2 SiO 5 as the main components. The dielectric composition contains preferably 5 mass% to 99 mass% of the Bi 2 SiO 5 crystalline phase, and more preferably 30 mass% to 99 mass%.

Abstract translation: 包含由通式Bi 12 SiO 20表示的结晶相和由通式Bi 2 SiO 5表示的结晶相作为主要成分的电介质组合物。 电介质组合物优选含有5质量％〜99质量％的Bi 2 SiO 5结晶相，更优选为30质量％〜99质量％。

公开(公告)号：EP2924693B1

公开(公告)日：2019-01-30

申请号：EP15159883.6

申请日：2015-03-19

Applicant: TDK Corporation

Inventor： Masaoka, Raitarou ,  Kaneko, Toshihiko ,  Yamashita, Yuki ,  Uchiyama, Hiroki ,  Takeda, Saori ,  Sezai, Yuji ,  Ootsuki, Shirou

IPC: H01B3/12 ,  C04B35/48

公开(公告)号：EP2924693A2

公开(公告)日：2015-09-30

申请号：EP15159883.6

申请日：2015-03-19

Applicant: TDK Corporation

Inventor： Masaoka, Raitarou ,  Kaneko, Toshihiko ,  Yamashita, Yuki ,  Uchiyama, Hiroki ,  Takeda, Saori ,  Sezai, Yuji ,  Ootsuki, Shirou

IPC: H01B3/12

CPC classification number: C04B35/49 ,  C04B35/47 ,  C04B35/48 ,  C04B35/486 ,  C04B35/638 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/6562 ,  C04B2235/79 ,  C04B2235/80 ,  H01B3/12

Abstract: A dielectric composition contains major components that are an A-group containing major components that are at least two selected from the group consisting of Ba, Ca, and Sr and a B-group which contains a major component that is selected from Zr and Ti and which contains at least Zr. The dielectric composition contains an amorphous substance containing the A-group and the B-group and a crystalline substance containing the A-group and the B-group. In the dielectric composition, the inequality 0.5 ≤ α ≤ 1.5 holds, where α is the molar ratio of the A-group to the B-group.

Abstract translation: 电介质组合物含有主要成分，该主要成分是含有选自Ba，Ca和Sr中的至少两种主要成分的A基和含有选自Zr和Ti的主要成分的B基和 其中至少含有Zr。 电介质组合物包含含有A基团和B基团的无定形物质和含有A基团和B基团的晶体物质。 在介电组合物中，不等式0.5≤α≤1.5成立，其中α是A基团与B基团的摩尔比。

公开(公告)号：EP1394116A1

公开(公告)日：2004-03-03

申请号：EP03019542.4

申请日：2003-09-01

Applicant: TDK Corporation

Inventor： Sezai, Yuji ,  Yasuhara, Katsushi ,  Takagawa, Kenya ,  Watanabe, Masahiko

IPC: C01G49/00 ,  H01F1/34 ,  H01F27/255

CPC classification number: C04B35/2658 ,  C01G49/0063 ,  C01G49/0072 ,  C01P2006/42 ,  C04B2235/3208 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3263 ,  C04B2235/3277 ,  C04B2235/3284 ,  C04B2235/3418 ,  C04B2235/5436 ,  C04B2235/656 ,  C04B2235/658 ,  C04B2235/6584 ,  C04B2235/72 ,  C04B2235/727 ,  H01F1/344 ,  H01F27/255

Abstract: An Mn-Zn ferrite wherein 0 to 5000 ppm of a Co oxide in a Co 3 O 4 conversion is contained in a basic component constituted by Fe 2 O 3 : 51.5 to 57.0 mol% and ZnO: 0 to 15 mol% (note that 0 is not included) wherein the rest is substantially constituted by MnO; and a value α in a formula (1) below in said ferrite satisfies α≥0.93. α= ((Fe 2+ - Mn 3+ - Co 3+ ) × (4.29 × A + 1.91 × B + 2.19 × C + 2.01 × D)) / ((A - B - C - D) × 100) ... formula (1). Note that in the formula (1), (Fe 2+ - Mn 3+ - Co 3+ ):[wt%], A: Fe 2 O 3 [mol%], B: MnO [mol%], C: ZnO [mol%] and D: CoO [mol%]. According to the present invention, a highly reliable Mn-Zn ferrite used as a magnetic core of a power supply transformer, etc. of a switching power supply, etc., having a small core loss in a wide temperature range, furthermore, exhibiting a little deterioration of core loss characteristics under a high temperature (in a high temperature storage test) and having excellent magnetic stability, a transformer magnetic core and a transformer can be provided.

Abstract translation: 由Fe 2 O 3：51.5〜57.0摩尔％和ZnO：0〜15摩尔％构成的碱性成分中含有0〜5000ppm的Co 3 O 4转换中的Co氧化物的Mn-Zn铁氧体（注意，不包括0），其中 其余部分基本上由MnO构成; 并且所述铁素体中的下式（1）中的α值满足α≥0.93。 α=（（Fe 2+ -Mn 3+→Co 3+））x（4.29×A + 1.91×B + 2.19×C + 2.01×D））/（（A-B-C- D）×100）...式（1）。 注意，在式（1）中，（Fe 2+ - Mn 3+→Co 3+）：Äwt％ÜA：Fe 2 O 3Ämol％ü，B：MnOÄmol％Ü，C：ZnO Ämol％Ü和D：CoOÄmol％Ü。 根据本发明，在宽温度范围内用作开关电源等的电源变压器等的磁芯的磁芯损耗小的高可靠性的Mn-Zn铁氧体，此外， 可以提供在高温（高温储存试验）中具有优异的磁稳定性，变压器磁芯和变压器的铁损损特性的劣化。