公开(公告)号：US20130154785A1

公开(公告)日：2013-06-20

申请号：US13709091

申请日：2012-12-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tomoya YOKOYAMA ,  Tetsuya IKEDA

IPC: H01F5/00 ,  H01F41/04

CPC classification number: H01F5/003 ,  H01F17/0033 ,  H01F41/041 ,  H01F41/046

Abstract: In a laminated inductor element, a magnetic ferrite layer sandwiched between two conductor patterns is thinner than other magnetic ferrite layers. Therefore, a crack occurs in the magnetic ferrite layer due to firing. As a result of the occurrence of this crack, a stress applied to each layer is relaxed, and it becomes possible to avoid warpage, a crack, or the like. In addition, in the laminated type inductor element, the two conductor patterns are electrically connected by two via holes, and subjected to a same potential. Since the two conductor patterns correspond to a same wiring pattern and a coil of coil conductor is defined by the two conductor patterns, even if upper and lower coil conductors are electrically in contact with each other due to the crack, the two conductor patterns are not put into a short-circuited state.

Abstract translation: 在层叠电感器元件中，夹在两个导体图案之间的磁性铁氧体层比其它磁性铁氧体层薄。 因此，由于烧结而在磁性铁氧体层中产生裂纹。 作为这种裂纹的发生的结果，施加到每个层的应力被放宽，并且可以避免翘曲，裂纹等。 此外，在层叠型电感器元件中，两个导体图案通过两个通孔电连接，并且受到相同的电位。 由于两个导体图案对应于相同的布线图案，并且线圈导体的线圈由两个导体图案限定，即使上部和下部线圈导体由于裂纹而彼此电接触，两个导体图案也不是 陷入短路状态。

公开(公告)号：US20150302980A1

公开(公告)日：2015-10-22

申请号：US14254252

申请日：2014-04-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi NOMA ,  Tetsuya IKEDA

IPC: H01F27/34 ,  H01F27/24 ,  H01F27/28

CPC classification number: H01F27/34 ,  H01F17/0013 ,  H01F17/0033 ,  H01F27/24 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/40 ,  H01F2017/0066 ,  H01F2027/2809 ,  H03H2001/0057 ,  H03H2001/0085

Abstract: A composite electronic component with a built-in coil is provided which can be produced inexpensively, which can effectively increase insulating reliability, and which has the antistatic function. Coil wirings are disposed inside a sintered body that is formed by stacking a plurality of ferrite layers, which are fired as an integral unit. Voltage nonlinear members are incorporated in the sintered body at a different height position from those of the coil wirings. First inner electrodes and second inner electrodes are disposed in opposing relation with the voltage nonlinear members interposed therebetween. A magnetic circuit forming portion is constituted by a part of the ferrite layers and the coil wirings in a portion in which the coil wirings are arranged, and an antistatic portion is constituted in a portion in which the remaining ferrite layers, the voltage nonlinear members, and the first and second inner electrodes are arranged.

Abstract translation: 提供具有内置线圈的复合电子部件，其可以廉价地制造，这可以有效地增加绝缘可靠性，并且具有抗静电功能。 线圈布置在通过堆叠作为一体单元烧制的多个铁氧体层形成的烧结体内部。 电压非线性元件与不同于线圈布线的高度位置结合在烧结体中。 第一内部电极和第二内部电极与插入其间的电压非线性部件相对设置。 磁路形成部分由铁氧体层的一部分和布置有线圈布线的部分中的线圈布线构成，并且在其中剩余的铁氧体层，电压非线性构件等的部分中构成防静电部分， 并且布置第一和第二内部电极。

公开(公告)号：US20130077199A1

公开(公告)日：2013-03-28

申请号：US13680317

申请日：2012-11-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuya IKEDA

IPC: H02H3/20

CPC classification number: H02H3/20 ,  H01T1/22 ,  H01T4/12

Abstract: A highly reliable ESD protection device that prevents failure of discharge and variation of a discharge start voltage even when protection from static electricity is repeatedly performed includes a cavity provided in a ceramic multilayer substrate. First and second discharge electrodes are provided in the ceramic multilayer substrate and face each other across a gap. A tip of the first discharge electrode and a tip of the second discharge electrode are positioned at edges of the cavity or at positions receded from the edges.

Abstract translation: 即使重复进行防静电，也能够防止放电失败和放电启动电压的变化的高度可靠的ESD保护装置包括设置在陶瓷多层基板中的空腔。 第一放电电极和第二放电电极设置在陶瓷多层基板中并且跨越间隙彼此面对。 第一放电电极的尖端和第二放电电极的末端位于空腔的边缘或从边缘退出的位置。