CN107683008A - A kind of low appearance ESD electrostatic protection suppressors - Google Patents
A kind of low appearance ESD electrostatic protection suppressors Download PDFInfo
- Publication number
- CN107683008A CN107683008A CN201711080851.1A CN201711080851A CN107683008A CN 107683008 A CN107683008 A CN 107683008A CN 201711080851 A CN201711080851 A CN 201711080851A CN 107683008 A CN107683008 A CN 107683008A
- Authority
- CN
- China
- Prior art keywords
- sparking electrode
- suppressors
- trigger unit
- ferritic
- esd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
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- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a kind of low appearances ESD electrostatic protection suppressors, possess the ferritic for being laminated multiple insulator layers and forming, the fine copper coil being configured in ferritic, by the vertical direction in multiple insulator layers with the arrangement of fine copper coil in a manner of be configured in ESD suppressors in ferritic.ESD suppressors include the first and second sparking electrode configured separately of each other, be contacted with a manner of the part relative to each other in the first and second sparking electrode to be connected to each other the first and second sparking electrode and the electric discharge trigger unit containing Ag/Cu alloying pellets and formed.First and second sparking electrode looks up in the Vertical Square of multiple insulator layers is more located at fine copper coil sides compared with electric discharge trigger unit.Low capacitance parasitic capacitance is produced between the inner conductor for forming fine copper coil and the first and second sparking electrode for being contained in ESD suppressors or electric discharge trigger unit.
Description
Technical field
The present invention relates to a kind of low appearance ESD electrostatic protection suppressors, the parasitic capacitance with low capacitance.
Background technology
It is known to have the ferritic for possessing the multiple insulator layers of stacking and forming, be connected to each other by multiple inner conductors to form
And the fine copper coil that is configured in ferritic and formed comprising first configured separately of each other and the second sparking electrode
And the electrostatic protection component for the ESD suppressors being configured in ferritic (discloses 2003-123936 referring for example to Japanese patent application
Number publication (hereinafter referred to as patent document 1)).It it is known that possess the first and second electric discharge comprising configuring separately of each other
Electrode, first and is contacted with a manner of the part relative to each other in the first and second sparking electrode to be connected to each other
Two sparking electrodes and electric discharge trigger unit containing Ag/Cu alloying pellets and the ESD suppressors formed, and blank part is to contact
Above-mentioned part relative to each other in the first and second sparking electrode is each other and the mode of electric discharge trigger unit is configured
Electrostatic protection component (2011-243896 publication (hereinafter referred to as patent documents are disclosed referring for example to Japanese patent application
2))。
The content of the invention
In ESD suppressors (electrostatic protection component), because the first and second sparking electrode configures separately of each other, institute
Discharged if being put on the voltage more than by setting between the electrode in separate section.Trigger unit of discharging tool
There is the function of the electric discharge in the separate section that the first and second sparking electrode easily occurs.ESD suppressors have ESD
(Electro-StaticDischarge (static discharge)) absorbent properties.
However, fine copper coil and ESD suppression are configured with ferritic importeding into electric discharge trigger unit and blank part to possess
In the case of the electrostatic protection component of the structure of device, the problem of following such can probably occur.It is pure being made up of inner conductor
In the case that copper coil and the ESD suppressors formed comprising electric discharge trigger unit are configured in ferritic, it is necessary to obtain inside
Conductor and electric discharge trigger unit are configured in the ferritic of inside.Ferritic generally goes through the process for the heat treatment for implementing to burn till etc. and obtained
Arrive.Now, the material for forming inner conductor is possible to be diffused into electric discharge trigger unit.
The characteristic for trigger unit of being discharged if if the material for forming inner conductor is diffused into electric discharge trigger unit can become
Change.The resistance drop for trigger unit of being discharged if if material, the i.e. conductor material for forming inner conductor is diffused into electric discharge trigger unit
It is low, so as to be discharged between the first and second sparking electrode with than relatively low voltage generation.If to leading for electric discharge trigger unit
Then substantially electric discharge trigger unit becomes conductor if the diffusing capacity of electric material is more, and is sent out between the first and second sparking electrode
Raw short circuit.
In the electrostatic protection component for possessing the structure that fine copper coil and ESD suppressors are configured in ferritic, forming
The inner conductor of fine copper coil and be contained in ESD suppressors the first and second sparking electrode or electric discharge trigger unit between produce
Raw parasitic capacitance.The electric discharge trigger unit for being contacted with the first and second sparking electrode contains Ag/Cu alloying pellets and dielectric is normal
Number is high.Therefore, caused parasitic capacitance is bigger between fine copper coil and ESD suppressors.Parasitic capacitance, which turns into, for example makes an uproar
One of the main reason for deterioration of sound characteristicses or the deterioration in characteristics of transmission signal etc..
The technical solution adopted in the present invention provides a kind of change of the characteristic for trigger unit of discharging and is suppressed and can drop
The low appearance ESD electrostatic protection suppressors of low parasitic capacitance caused between fine copper coil and ESD suppressors.Its feature exists
In：
Possess ferritic, be laminated multiple insulator layers and form；Fine copper coil, it is connected to each other by multiple inner conductors to form simultaneously
And it is configured in the ferritic；And ESD suppressors, with the vertical direction of the multiple insulator layer with the fine copper
The mode of coil arrangement is configured in the ferritic；
The ESD suppressors include configure separately of each other the first and second sparking electrode, with by described first and the
The mode that part relative to each other in two sparking electrodes is connected to each other be contacted with the described first and second sparking electrode and
Electric discharge trigger unit containing Ag/Cu alloying pellets and form, form fine copper coil inner conductor and be contained in ESD suppressors
The first and second sparking electrode or electric discharge trigger unit between produce low capacitance parasitic capacitance；
Described first and second sparking electrode the Vertical Square look up it is more described electric discharge trigger unit be more located at the fine copper
Coil sides,
The ferritic covers the electric discharge trigger unit when having with terms of from the fine copper coil sides along the vertical direction
The blank part that is positioned of overall mode,
The blank part each other and described is put with the part relative to each other in the described first and second sparking electrode
Electric trigger unit contact.
First sparking electrode has perpendicular to a first side portion just upwardly extended of the vertical direction,
Second sparking electrode has the second side portion extended in the one direction,
Described first and second sparking electrode is configured as separated from each other so that the first side portion and the second side
Portion is relative.
Form fusing point of the fusing point less than the material for forming the Ag/Cu alloying pellets of the material of the inner conductor.
Brief description of the drawings
Fig. 1 is the stereogram for representing the low appearance ESD electrostatic protection suppressors involved by the 1st embodiment.
Fig. 2 is the exploded perspective view for the structure for representing ferritic.
Fig. 3 is the schematic diagram for representing the cross section structure along the III-III lines represented by Fig. 1.
Fig. 4 is the schematic diagram for representing the cross section structure along the IV-IV lines represented by Fig. 1.
Embodiment
With reference to Figure of description, the present invention is further illustrated.
1~Fig. 4 of reference picture, illustrate the structure of the low appearance ESD electrostatic protections suppressor 1 involved by the 1st embodiment.Fig. 1
It is the stereogram for representing the low appearance ESD electrostatic protection suppressors involved by present embodiment.Fig. 2 is point for the structure for representing ferritic
Solve stereogram.Fig. 3 is the schematic diagram for representing the cross section structure along the III-III lines represented by Fig. 1.Fig. 4 is represented along Fig. 1
The schematic diagram of the cross section structure of represented IV-IV lines.
Low appearance ESD electrostatic protections suppressor 1 is to be installed in the circuit substrate of electronic equipment and protect electronic devices from
ESD electronic unit.As shown in Figure 1 to 4, low appearance ESD electrostatic protections suppressor 1 possesses the element that approximately parallelepiped body shape is presented
Body 4, be configured in ferritic 4 outer surface outer electrode 5, outer electrode 6, outer electrode 7 and outer electrode 8, be configured
Fine copper coil L1 in the inside of ferritic 4, be configured in ferritic 4 inside the ESD suppressors SP1 with ESD absorbent properties.
Hereinafter, using the short transverse of ferritic 4 as Z-direction, using the long side direction of ferritic 4 as Y-direction, by the short side direction of ferritic 4
As X-direction.
Ferritic 4 is laminated multiple insulator layers 10 and is configured.Each insulator layer 10 has substantially rectangular shape.It is each exhausted
Edge body layer 10 has electrical insulating property, is made up of the sintered body of insulator raw cook.In the ferritic 4 of reality, each insulator layer
10 can not visually confirm that the degree on the border between each layer is integrated.Ferritic 4 had as the relative to each other of outer surface
A pair of end face 4a, 4b, be adjacent to end face 4a, 4b four sides.A pair of end face 4a, 4b are enterprising in the long side direction of ferritic 4
Row is relative.A side 4c in four sides is defined as and not shown other electronic equipments (such as circuit substrate
Or electronic unit etc.) aspectant face (mounting surface).
Outer electrode 5 and outer electrode 6 are configured in the side 4c of ferritic 4.Outer electrode 5 is located on the 4c of side to be leaned on
Proximal end face 4a end.Outer electrode 6 is located at close to end face 4b end on the 4c of side.Outer electrode 5 and outer electrode 6
Play the function as so-called bottom-side electrodes.Outer electrode 7 is configured in the end face 4a sides of ferritic 4.Outer electrode 7 is to cover element
The end face 4a of the body 4 roundabout mode on four sides adjacent with end face 4a of entire surface and one part is by shape
Into.Outer electrode 8 is configured in the end face 4b sides of ferritic 4.Outer electrode 8 with cover the end face 4b of ferritic 4 entire surface and
The roundabout mode on four sides adjacent with end face 4b of one part is formed.Outer electrode 5 and the quilt of outer electrode 7
Interconnect, outer electrode 6 and outer electrode 8 are connected to each other (reference picture 4).
Fine copper coil L1 by multiple inner conductors be the end of conductor 21, conductor 22, conductor 23 and conductor 24 each other
Connected by each via conductors 31,32,33 to be formed.Conductor 21, conductor 22, conductor 23 and conductor 24 are in ferritic 4
Inside is juxtaposed in the vertical direction (being only referred to as below " vertical direction ") of insulator layer 10.Each conductor 21~24 exists
In vertical direction from the side close to the side 4c of ferritic 4 by conductor 21, conductor 22, conductor 23, conductor 24 order quilt
Configuration.
Via conductors 31 are between conductor 21 and conductor 22, and electric connecting conductor 21 and conductor 22.Via conductors 32
Between conductor 22 and conductor 23, and electric connecting conductor 22 and conductor 23.Via conductors 33 between conductor 23 and conductor 24,
And electric connecting conductor 23 and conductor 24.Each via conductors 31~33 play the function of the part as fine copper coil L1.
The end 24a of conductor 24 is exposed to the end face 4a of ferritic 4, and is connected (reference picture 4) with outer electrode 7.Conductor
21 end 21a is exposed to the end face 4b of ferritic 4, and is connected with outer electrode 8.The end 24a of conductor 24 corresponds to fine copper
Coil L1 one end E11, the end 21a of conductor 21 correspond to fine copper coil L1 other end E12.Therefore, fine copper coil L1 with
Each outer electrode 7,8 is electrically connected.Fine copper coil L1 D.C. resistance can be surveyed between each outer electrode 7,8
It is fixed.In the present embodiment, the value of fine copper coil L1 D.C. resistance is set to 21 below Ω.
ESD suppressors SP1 is configured in compared with fine copper coil L1 closer to the side 4c of ferritic 4 position in vertical direction
Put.ESD suppressors SP1 include the first sparking electrode 11 and the second sparking electrode 12, electric discharge trigger unit 13 and form.First puts
The sparking electrode 12 of electrode 11 and second is separated from each other and is configured in same insulator layer 10.Trigger unit 13 of discharging connection the
One sparking electrode 11 and the second sparking electrode 12.
First sparking electrode 11 has end 11a, extended on the long side direction (Y-direction of figure) of insulator layer 10
First side portion 11b.The end 11a of first sparking electrode 11 is connected by via conductors 34 with being connected conductor 38.Connection
Conductor 38 is connected by via conductors 35 with outer electrode 5.Thus, the first sparking electrode 11 is electrically connected with outer electrode 5.
The second side that second sparking electrode 12 has end 12a, extended on the long side direction of insulator layer 10
Portion 12b.The end 12a of second sparking electrode 12 is connected by via conductors 36 with being connected conductor 39.Conductor 39 is connected by leading to
Hole conductor 37 and be connected with outer electrode 6.Thus, the second sparking electrode 12 is electrically connected with outer electrode 6.
As previously discussed, outer electrode 5 is connected with outer electrode 7, and outer electrode 6 is connected with outer electrode 8.Cause
This, ESD suppressors SP1 is electrically connected with outer electrode 7 by outer electrode 5 and by outer electrode 6 and the phase of outer electrode 8
Electrical connection.Therefore, ESD suppressors SP1 and fine copper coil L1 is connected in parallel between outer electrode 7 and outer electrode 8.
First sparking electrode 11 and the second sparking electrode 12 on a direction perpendicular to vertical direction to be extended
The first side portion 11b and second side portion 12b that is extended in a side to carry out relative mode separated from each other
Ground configures.That is, the first sparking electrode 11 and the second sparking electrode 12 are with the long side direction (Y of figure perpendicular to insulator layer 10
Direction) direction (X-direction of figure) on the mode that is abutted be configured, it is and relative separately of each other.Thus, in the first side
Clearance portion GP1 (reference picture 3) is formed between facial 11b and second side portion 12b.If voltage more than regulation is put on outer
Then the clearance portion GP1 between the first sparking electrode 11 and the second sparking electrode 12 is sent out between portion's electrode 7 and outer electrode 8
Raw electric discharge.
Electric discharge trigger unit 13 is located at the first sparking electrode 11 and the second sparking electrode 12 and external electrical in vertical direction
Between pole 5 and outer electrode 6.Trigger unit 13 of discharging is in a manner of connecting first side portion 11b and second side portion 12b with the
One sparking electrode 11 and the second sparking electrode 12 are connected.That is, trigger unit 13 of discharging is with by the first and second sparking electrode
The mode that part relative to each other in 11,12 is connected to each other is formed.Trigger unit 13 of discharging has easily in the first electric discharge
The function of being discharged between the sparking electrode 12 of electrode 11 and second.
Ferritic 4 has blank part 14 (reference picture 3 and Fig. 4).Blank part 14 is positioned at electric discharge trigger unit 13 and fine copper coil
Between L1.Divide what the first and second sparking electrode 11,12 in bread trigger unit 13 containing electric discharge of blank part 14 was configured
Face 13a, the face 14b relative with face 13a.Face 13a is also the face relative with fine copper coil L1 discharged in trigger unit 13.Face 14b
In vertical direction between face 13a and fine copper coil L1.First and second sparking electrode 11,12 is with it relative to each other
Part i.e. first and second side portion 11b, the mode that 12b is loaded are formed on the 13a of face.
The face 14b relative with face 13a is formed to be larger than face 13a, and face 14b is in terms of vertical direction with the whole of coverage rate 13a
The mode of body is formed.That is, blank part 14 is vertically seen from fine copper coil L1 sides to cover the entirety of electric discharge trigger unit 13
Mode positioned.The face of blank part 14 is divided because including the face 13a of electric discharge trigger unit 13, blank part 14 is contacted with
First side portion 11b and second side portion 12b, electric discharge trigger unit 13 on the 13a of face.Blank part 14, which has, to be absorbed
The work(of the thermal expansion of the first sparking electrode 11, the second sparking electrode 12, insulator layer 10 and trigger unit 13 of discharging during electric discharge
Energy.
Then, the material of each inscape is described in detail.
Outer electrode 5~8, the first sparking electrode 11, the second sparking electrode 12 respectively by containing Ag, Pd, Au, Pt, Cu,
Ni, Al, Mo or W conductor material are formed.Outer electrode 5~8 can use alloy (such as Ag/Pd alloys, Ag/Cu close
Gold, Ag/Au alloys or Ag/Pt alloys etc.).
Insulator layer 10 by Fe2O3, NiO, CuO, ZnO, MgO, SiO2, TiO2, Mn2O3, SrO, CaO, BaO, SnO2,
Independent material in K2O, Al2O3, ZrO2 and B2O3 etc. is formed.Insulator layer 10 can also by two kinds in these materials with
On material mixed ceramic material formed.Glass can also be contained in insulator layer 10.For insulator layer
For 10 cupric oxide (CuO or Cu2O) is preferably comprised in order to implement low-temperature sintering.
Each conductor 21~24, each via conductors 31~37 and each connection conductor 38,39 for example comprising Ag or
Pd etc. conductor material.Each conductor 21~24, each via conductors 31~37 and it is each connection conductor 38,39 as comprising
The sintered body of the electric conductivity lotion of above-mentioned conductor material is formed.
Discharge trigger unit 13 include Fe2O3, NiO, CuO, ZnO, MgO, SiO2, TiO2, Mn2O3, SrO, CaO, BaO,
Independent material in SnO2, K2O, Al2O3, ZrO2 and B2O3 etc. is formed.Electric discharge trigger unit 13 can also include this
Two or more materials mixed material is formed in a little materials.In trigger unit 13 of discharging containing Ag, Pd, Au, Pt,
The metallic particles of Ag/Pd alloys, Ag/Cu alloys, Ag/Au alloys or Ag/Pt alloys etc..Can also in trigger unit 13 of discharging
Semiconductor grain containing RuO2 etc..Glass either tin oxide (SnO or SnO2) can also be contained in trigger unit 13 of discharging.
The fusing point of the metal material contained in trigger unit 13 of discharging as metallic particles, which is higher than, is forming each of fine copper coil L1
The fusing point of contained conductor material in conductor 21~24.
It is given above the application for describing in detail state the present invention with will be more readily apparent from.But these are specifically
Bright and particular example and preferred embodiment, are enumerated, the obvious energy of those skilled in the art solely for the purpose of illustration
Enough variations and modifications for understanding the present invention are all in the purpose and scope of the invention.
Claims (3)
- A kind of 1. low appearance ESD electrostatic protection suppressors, it is characterised in that：Possess：Ferritic, it is laminated multiple insulator layers and forms；Fine copper coil, it is connected to each other by multiple inner conductors to form and be configured in the ferritic；AndESD suppressors, it is configured in a manner of being arranged in the vertical direction in the multiple insulator layer with the fine copper coil In in the ferritic；The ESD suppressors include configure separately of each other the first and second sparking electrode, with by described first and the The mode that part relative to each other in two sparking electrodes is connected to each other be contacted with the described first and second sparking electrode and Electric discharge trigger unit containing Ag/Cu alloying pellets and form, form fine copper coil inner conductor and be contained in ESD suppressors The first and second sparking electrode or electric discharge trigger unit between produce low capacitance parasitic capacitance；Described first and second sparking electrode the Vertical Square look up it is more described electric discharge trigger unit be more located at the fine copper Coil sides；The ferritic covers the electric discharge trigger unit when having with terms of from the fine copper coil sides along the vertical direction The blank part that is positioned of overall mode；The blank part each other and described is put with the part relative to each other in the described first and second sparking electrode Electric trigger unit contact.
- 2. low appearance ESD electrostatic protection suppressors as claimed in claim 1, it is characterised in that：First sparking electrode has perpendicular to a first side portion just upwardly extended of the vertical direction；Second sparking electrode has the second side portion extended in the one direction；Described first and second sparking electrode is configured as separated from each other so that the first side portion and the second side Portion is relative.
- 3. the low appearance ESD electrostatic protection suppressors as described in claims 1 or 2, it is characterised in that：Form fusing point of the fusing point less than the material for forming the Ag/Cu alloying pellets of the material of the inner conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080851.1A CN107683008A (en) | 2017-11-06 | 2017-11-06 | A kind of low appearance ESD electrostatic protection suppressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080851.1A CN107683008A (en) | 2017-11-06 | 2017-11-06 | A kind of low appearance ESD electrostatic protection suppressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107683008A true CN107683008A (en) | 2018-02-09 |
Family
ID=61146665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711080851.1A Pending CN107683008A (en) | 2017-11-06 | 2017-11-06 | A kind of low appearance ESD electrostatic protection suppressors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107683008A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012084629A (en) * | 2010-10-08 | 2012-04-26 | Murata Mfg Co Ltd | Coil device |
| CN102802333A (en) * | 2011-05-25 | 2012-11-28 | Tdk株式会社 | Electrostatic protection component |
| US20140198418A1 (en) * | 2013-01-15 | 2014-07-17 | Citruscom Corporation | Integrated circuit common-mode filters with esd protection and manufacturing method |
| CN104348086A (en) * | 2013-08-01 | 2015-02-11 | Tdk株式会社 | Esd protection component and method for manufacturing esd protection component |
| CN104754847A (en) * | 2013-12-26 | 2015-07-01 | Tdk株式会社 | Esd protection component |
-
2017
- 2017-11-06 CN CN201711080851.1A patent/CN107683008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012084629A (en) * | 2010-10-08 | 2012-04-26 | Murata Mfg Co Ltd | Coil device |
| CN102802333A (en) * | 2011-05-25 | 2012-11-28 | Tdk株式会社 | Electrostatic protection component |
| US20140198418A1 (en) * | 2013-01-15 | 2014-07-17 | Citruscom Corporation | Integrated circuit common-mode filters with esd protection and manufacturing method |
| CN104348086A (en) * | 2013-08-01 | 2015-02-11 | Tdk株式会社 | Esd protection component and method for manufacturing esd protection component |
| CN104754847A (en) * | 2013-12-26 | 2015-07-01 | Tdk株式会社 | Esd protection component |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20180209 |