CN203871183U

CN203871183U - Laminated ceramic capacitor

Info

Publication number: CN203871183U
Application number: CN201420137763.6U
Authority: CN
Inventors: 赵玉
Original assignee: HAIMEN MBI ELECTRONICS DEVELOPMENT Co Ltd
Current assignee: Sino-German electronics Development Co., Ltd of Haimen City
Priority date: 2014-03-26
Filing date: 2014-03-26
Publication date: 2014-10-08
Anticipated expiration: 2024-03-26

Abstract

The utility model discloses a laminated ceramic capacitor comprising a capacitor main body, inner electrodes and outer electrodes; the inner electrode and the outer electrode are electrically connected; the outer electrode is arranged on a surface of two sides of the capacitor main body; the capacitor main body comprises a plurality of inner electrodes and a plurality of medium ceramic layers alternating with the plurality of inner electrodes; the inner electrodes are laminated to form four lamination bodies; a second lamination body and a third lamination body are arranged between the first and fourth lamination bodies, and are arranged in a staggering manner; the plurality of medium ceramic layers are arranged to improve dielectric constants; in addition, the medium ceramic layer formed between adjacent inner conductors in each lamination body is thin and developed in a thinner direction, thereby satisfying miniature and large capacity requirements.

Description

Laminated ceramic capacitor

Technical field

The utility model relates to a kind of laminated ceramic capacitor.

Background technology

As the laminated ceramic capacitor of one of representational ceramic electronic components, generally possess duplexer and multiple outer electrode, duplexer has stacked multiple ceramic layers and the multiple internal electrodes along the interface formation between ceramic layer, and outer electrode is formed on the outer surface of duplexer and is electrically connected with internal electrode.

In order to meet the jumbo requirement of miniaturization, advance the thin layer of the ceramic layer of laminated ceramic capacitor, but wishing to improve dielectric constant, wish to make ceramic particle to increase.Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.

Utility model content

For addressing the above problem, the utility model provides a kind of laminated ceramic capacitor of thin layer.

The technical solution adopted in the utility model is:

Laminated ceramic capacitor, comprise capacitor main body, interior electrode and external electrode, described interior electrode and external electrode electrical connection, described external electrode is arranged on the both side surface of capacitor main body, multiple media ceramic layers that described capacitor main body comprises multiple interior electrodes and replaces with multiple interior electrodes, four duplexers of the stacked formation of described interior electrode, are placed with the second duplexer and the 3rd duplexer between described first cascade body and the 4th duplexer, described the second duplexer and the 3rd duplexer stagger and arrange.

Described first cascade body and the 4th duplexer stagger by four interior electrodes stacking and with media ceramic layer alternately, the second duplexer and the 3rd duplexer by continuous stacking of three interior electrodes and with media ceramic layer alternately.

The distance forming between adjacent duplexer is greater than the thickness of the media ceramic layer between adjacent interior electrode.

The thickness of described media ceramic layer is 1-2 μ m.

Described external electrode comprises tin layer, nickel dam and copper layer from outside to inside successively.

The beneficial effects of the utility model: there are multiple media ceramic layers, can improve dielectric constant, the media ceramic layer simultaneously forming between the adjacent inner conductors in each duplexer, thinner, to thin layer future development, meet miniaturization and jumbo requirement.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1.

Fig. 3 is the structure for amplifying schematic diagram at B place in Fig. 1.

Fig. 4 is external structure schematic diagram of the present utility model.

Wherein: 1, capacitor main body, 2, interior electrode, 3, external electrode, 4, media ceramic layer, 5, first cascade body, 6, the second duplexer, 7, the 3rd duplexer, 8, the 4th duplexer, 9, tin layer, 10, nickel dam, 11, copper layer.

Embodiment

In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment only, for explaining the utility model, does not form the restriction to protection range of the present utility model.

As shown in Figure 1, laminated ceramic capacitor of the present utility model, comprise capacitor main body 1, interior electrode 2 and external electrode 3, interior electrode 2 and external electrode 3 are electrically connected, external electrode 3 is arranged on the both side surface of capacitor main body 1, multiple media ceramic layers 4 that capacitor main body 1 comprises multiple interior electrodes 2 and replaces with multiple interior electrodes 2, four duplexers of the stacked formation of interior electrode 2, between first cascade body 5 and the 4th duplexer 8, being placed with the second duplexer 6 and the 3rd duplexer 7, the second duplexers 6 and the 3rd duplexer 7 staggers and arranges.The in the situation that of same space, due to four duplexers of the stacked formation of interior electrode 2, the number of duplexer affects dielectric coefficient to a certain extent.

Shown in Fig. 2, first cascade body 5 and the 4th duplexer 8 stagger by four interior electrodes 2 stacking and with media ceramic layer 4 alternately, four interior electrodes are stacking, in the situation that its thickness increases, therefore be to apply larger stress from interior electrode to ceramic particle, dielectric constant can reduce, but because interior electrode is the relation that staggers, the stress that puts on ceramic particle is relaxed, and therefore the dielectric constant of ceramic layer is to improve generally.

Shown in Fig. 3, the second duplexer 6 and the 3rd duplexer 7 by continuous stacking of three interior electrodes 2 and with media ceramic layer 4 alternately.Continuous stacked meeting increases ceramic particle, is conducive to the raising of dielectric constant.

Shown in Fig. 1, the distance forming between adjacent duplexer is greater than the thickness of the media ceramic layer 4 between adjacent interior electrode.Why, between adjacent duplexer, set certain width from thickness, each duplexer contacts on the whole, in electrical connection process, be independently again, unaffected, that is to say that the inner wire in each duplexer is electrically connected with outer conductor, being independently, is separated by dielectric layer.

The thickness of media ceramic layer 4 is 1-2 μ m, and the thickness of single dielectric layer is less than prior art, and prior art is 3-5 μ m, meets thin layer needs.

Shown in Fig. 4, external electrode 4 comprises tin layer 9, nickel dam 10 and copper layer 11 from outside to inside successively.Multiple coatings, finally protect inner duplexer.

There are multiple media ceramic layers, can improve dielectric constant, the media ceramic layer simultaneously forming between the adjacent inner conductors in each duplexer, thinner, to thin layer future development, meet miniaturization and jumbo requirement.

Claims

1. laminated ceramic capacitor, comprise capacitor main body, interior electrode and external electrode, described interior electrode and external electrode electrical connection, described external electrode is arranged on the both side surface of capacitor main body, it is characterized in that: multiple media ceramic layers that described capacitor main body comprises multiple interior electrodes and replaces with multiple interior electrodes, four duplexers of the stacked formation of described interior electrode, between described first cascade body and the 4th duplexer, be placed with the second duplexer and the 3rd duplexer, described the second duplexer and the 3rd duplexer stagger and arrange.

2. laminated ceramic capacitor according to claim 1, it is characterized in that: described first cascade body and the 4th duplexer stagger by four interior electrodes stacking and with media ceramic layer alternately, the second duplexer and the 3rd duplexer by continuous stacking of three interior electrodes and with media ceramic layer alternately.

3. laminated ceramic capacitor according to claim 1, is characterized in that: the distance forming between adjacent duplexer is greater than the thickness of the media ceramic layer between adjacent interior electrode.

4. laminated ceramic capacitor according to claim 3, is characterized in that: the thickness of described media ceramic layer is 1-2 μ m.

5. laminated ceramic capacitor according to claim 1, is characterized in that: described external electrode comprises tin layer, nickel dam and copper layer from outside to inside successively.