CN203596230U - Self-control anti-arcing voltage dependent resistor - Google Patents
Self-control anti-arcing voltage dependent resistor Download PDFInfo
- Publication number
- CN203596230U CN203596230U CN201420014508.2U CN201420014508U CN203596230U CN 203596230 U CN203596230 U CN 203596230U CN 201420014508 U CN201420014508 U CN 201420014508U CN 203596230 U CN203596230 U CN 203596230U
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- China
- Prior art keywords
- ceramics
- piezo
- electrode layer
- exposed
- autocontrol
- 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.)
- Expired - Lifetime
Links
- 230000001419 dependent effect Effects 0.000 title abstract 4
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052709 silver Inorganic materials 0.000 claims abstract description 16
- 239000004332 silver Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 230000002265 prevention Effects 0.000 claims description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229960001296 zinc oxide Drugs 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229920000647 polyepoxide Polymers 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 2
- 239000003822 epoxy resin Substances 0.000 abstract 2
- 239000002344 surface layer Substances 0.000 abstract 2
- 238000005476 soldering Methods 0.000 abstract 1
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The utility model discloses a self-control anti-arcing voltage dependent resistor. The self-control anti-arcing voltage dependent resistor comprises a ceramic chip, a silver electrode layer, an insulating coating and two pins, wherein the silver electrode layer is arranged on the surfaces of two electrodes of the ceramic chip, the inner ends of the two pins are welded to the silver electrode layer through soldering, the external connecting ends of the two pins extend out of the ceramic chip, when an epoxy resin surface layer is wrapped on a body, the surface of one electrode is exposed, and the exposed surface is in contact with air to form a discharging surface. According to the self-control anti-arcing voltage dependent resistor, when the epoxy resin surface layer is wrapped on the body, the surface of one electrode is exposed, the exposed surface is in contact with air to form a discharging surface, one side or the side edge of an MOV product can be coated with a single-side insulating coating, the metal end of one side of the ceramic chip is exposed, and the invalidation problem caused by arcing when the exposed ceramic chip is struck by lighting is solved.
Description
Technical field
The utility model relates to piezo-resistance, more particularly, relates in particular to autocontrol arcing prevention piezo-resistance.
Background technology
Existing industrial MOV piezo-resistance product according to application scenario different conventionally use epoxies and phenolic resins as outer encapsulating material to resist environmental attack.Be subject to the specific (special) requirements in installing space size decreases and some application, for example except as lightning surge inhibitor sometimes according to design also require the metal end face of MOV ceramics to bear the task of atmospherical discharges earial drainage simultaneously, it needs MOV to use in the situation that not sealing.But do not seal ceramics because Insulation Problems easily plays electric arc/arcing in lightning test, cause product carbonization scaling loss and lost efficacy.Now also there is no suitable industrialization solution.Therefore, how to address the above problem, become problem demanding prompt solution.
Utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, and a kind of autocontrol arcing prevention piezo-resistance is provided.
The technical solution of the utility model is such: a kind of autocontrol arcing prevention piezo-resistance, comprise ceramics, silver electrode layer, insulating coating and two pins, silver electrode layer is arranged on ceramics two electrode surfaces, the inner of two pins respectively by scolding tin be welded on silver electrode layer, external connection end extends outward outside ceramics, when its epoxy skins parcel body, be provided with a wherein electrode surface and be exposed surface, the exposed surface formation discharge face that contacts with air.
Above-mentioned autocontrol arcing prevention piezo-resistance, insulating coating is polyimide material coating.
Above-mentioned autocontrol arcing prevention piezo-resistance, ceramics is Zinc-oxide piezoresistor ceramics.
Above-mentioned autocontrol arcing prevention piezo-resistance, ceramics entirety is circular.
Above-mentioned autocontrol arcing prevention piezo-resistance, silver electrode layer is the electrode surface setting of ring-band shape along circular ceramics.
Adopt the utility model of technique scheme, while wrapping up body by epoxy skins, be provided with a wherein electrode surface and be exposed surface, exposed surface is contacted with air and forms discharge face electric discharge, proposed a kind of use the one side of one side insulating coating application MOV product and the method for lateral margin to solve to need exposed ceramics on one side metal end face suppress the Problem of Failure that nude film causes due to arcing in lightning stroke process simultaneously.Utilize air gap to discharge over the ground, for protecting this device piezo-resistance in parallel.While electric discharge over the ground due to piezo-resistance one utmost point, can produce heat, this heat can make the carbonization of the porcelain body of piezo-resistance own and lose efficacy, and therefore, is not needing discharge face and side to seal one deck insulating coating, to protect piezo-resistance porcelain body.
The utility model is applied to surge protection device (spd), alternating current circuit panel protection module, power change-over switch, ac/dc distribution system, electro-optical system and mobile phone communication base station.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but do not form any restriction of the present utility model.
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is the planar structure schematic diagram of the utility model in exposed surface side;
Fig. 3 is the A-A cross-sectional view of Fig. 2.
In figure: ceramics 1, exposed surface 11, silver electrode layer 2, the inner 41, external connection end 42, insulating coating 3, two pins 4.
Embodiment
Consult shown in Fig. 1～3, a kind of autocontrol arcing prevention piezo-resistance of the present utility model, comprise ceramics 1, silver electrode layer 2, insulating coating 3 and two pins 4, silver electrode layer 2 is arranged on 1 liang of electrode surface of ceramics, the inner 41 of two pins 4 respectively by scolding tin be welded on silver electrode layer 2, external connection end 42 extends outward outside ceramics 1, epoxy skins 3 is provided with a wherein electrode surface and is exposed surface 11 while wrapping up body, the exposed surface 11 formation discharge face that contacts with air.
The utility model utilizes air gap to discharge over the ground in the time of concrete use, for protecting this device piezo-resistance in parallel.While electric discharge over the ground due to piezo-resistance one utmost point, can produce heat, this heat can make the carbonization of the porcelain body of piezo-resistance own and lose efficacy, and for solving this technical problem, is not needing discharge face and side to seal one deck insulating coating, to protect piezo-resistance porcelain body.
In sum, the utility model is as specification and diagramatic content, makes actual sample and through repeatedly use test, from the effect of use test, provable the utility model can reach the object that it is expected, practical value is unquestionable.Above illustrated embodiment is only used for conveniently illustrating the utility model, not the utility model is done to any pro forma restriction, under any, in technical field, have and conventionally know the knowledgeable, if not departing from the scope of technical characterictic that the utility model is carried, utilize technology contents that the utility model discloses to make the local equivalent embodiment that changes or modify, and do not depart from technical characterictic content of the present utility model, all still belong in the scope of the utility model technical characterictic.
Claims (5)
1. an autocontrol arcing prevention piezo-resistance, comprise ceramics (1), silver electrode layer (2), insulating coating (3) and two pins (4), silver electrode layer (2) is arranged on ceramics (1) two electrode surface, the inner (41) of two pins (4) is welded on by scolding tin respectively that silver electrode layer (2) is upper, external connection end (42) extends outward outside ceramics (1), it is characterized in that: when epoxy skins (3) parcel body, be provided with a wherein electrode surface and be exposed surface (11), exposed surface (11) the formation discharge face that contacts with air.
2. autocontrol arcing prevention piezo-resistance according to claim 1, is characterized in that: insulating coating (3) is polyimide material coating.
3. autocontrol arcing prevention piezo-resistance according to claim 1, is characterized in that: ceramics (1) is Zinc-oxide piezoresistor ceramics.
4. autocontrol arcing prevention piezo-resistance according to claim 3, is characterized in that: ceramics (1) entirety is for circular.
5. autocontrol arcing prevention piezo-resistance according to claim 4, is characterized in that: silver electrode layer (2) is the electrode surface setting of ring-band shape along circular ceramics (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014508.2U CN203596230U (en) | 2014-01-09 | 2014-01-09 | Self-control anti-arcing voltage dependent resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014508.2U CN203596230U (en) | 2014-01-09 | 2014-01-09 | Self-control anti-arcing voltage dependent resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596230U true CN203596230U (en) | 2014-05-14 |
Family
ID=50677095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014508.2U Expired - Lifetime CN203596230U (en) | 2014-01-09 | 2014-01-09 | Self-control anti-arcing voltage dependent resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018209562A1 (en) * | 2017-05-16 | 2018-11-22 | Dongguan Littelfuse Electronics Co., Ltd. | Base metal electrodes for metal oxide varistor |
| CN110349720A (en) * | 2018-04-04 | 2019-10-18 | 爱普科斯电子元器件(珠海保税区)有限公司 | Metal-oxide varistor and its manufacturing method |
-
2014
- 2014-01-09 CN CN201420014508.2U patent/CN203596230U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018209562A1 (en) * | 2017-05-16 | 2018-11-22 | Dongguan Littelfuse Electronics Co., Ltd. | Base metal electrodes for metal oxide varistor |
| US10839993B2 (en) | 2017-05-16 | 2020-11-17 | Dongguan Littelfuse Electronics Company Limited | Base metal electrodes for metal oxide varistor |
| US11177057B2 (en) | 2017-05-16 | 2021-11-16 | Dongguan Littelfuse Electronics, Co., Ltd | Base metal electrodes for metal oxide varistor |
| CN110349720A (en) * | 2018-04-04 | 2019-10-18 | 爱普科斯电子元器件(珠海保税区)有限公司 | Metal-oxide varistor and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LITTELFUSE INC. Free format text: FORMER NAME: DONGGUAN LINGTE ELECTRONIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Humen Town Gate community in Guangdong province Dongguan City Nan Fang village 523000 Patentee after: DONGGUAN LITTELFUSE ELECTRONICS Co.,Ltd. Address before: Humen Town Gate community in Guangdong province Dongguan City Nan Fang village 523000 Patentee before: DONGGUAN LITTELFUSE ELECTRONICS CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |
|
| CX01 | Expiry of patent term |