CN203607176U - Piezoresistor suitable for high temperature and high humidity environment - Google Patents
Piezoresistor suitable for high temperature and high humidity environment Download PDFInfo
- Publication number
- CN203607176U CN203607176U CN201420014920.4U CN201420014920U CN203607176U CN 203607176 U CN203607176 U CN 203607176U CN 201420014920 U CN201420014920 U CN 201420014920U CN 203607176 U CN203607176 U CN 203607176U
- Authority
- CN
- China
- Prior art keywords
- silver electrode
- electrode layer
- silver
- piezoresistor
- oxide piezoresistor
- 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
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052709 silver Inorganic materials 0.000 claims abstract description 38
- 239000004332 silver Substances 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229960001296 zinc oxide Drugs 0.000 claims description 16
- 239000004642 Polyimide Substances 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 238000005476 soldering Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The utility model discloses a piezoresistor suitable for a high temperature and high humidity environment. The piezoresistor comprises a zinc oxide piezoresistor ceramic chip, silver electrode layers, an insulating coating and two pins, wherein the silver electrode layers are arranged on the surfaces of two electrodes of the zinc oxide piezoresistor ceramic chip, the inner ends of the two pins are respectively welded to the silver electrode layer by soldering tin while the external connecting ends extend out of the zinc oxide piezoresistor ceramic chip, and the insulating coating is a composite coating wrapping main body. According to the piezoresistor disclosed by the utility model, by virtue of the composite coating wrapping main body, the performance of the product in the high temperature and high humidity environment at 125 DEG C is improved by a method of coating the product through a high temperature resistant composite coating material. The thickness of the silver electrode layer is effectively guaranteed by arranging the circular silver electrode layer to prevent the silver electrode layer from being damaged during high-temperature welding. Meanwhile, the middle welding part of the circular silver electrode is the most hollow part, so that the use level of silver paste of the silver electrode layer is effectively reduced. The circular edge of the silver electrode layer maintains an effective silver area, so that the technical effect of maintaining high flow passage capacity is obtained.
Description
Technical field
The utility model relates to piezo-resistance, more particularly, relates in particular to the piezo-resistance that is applicable to hot and humid environment.
Background technology
Existing industrial MOV piezo-resistance product according to application different occasions conventionally use epoxy and phenolic resins as outer encapsulating material to resist environmental attack.Existing industrial metal oxide piezo-resistance product according to application different occasions conventionally use epoxy and phenolic resins as outer encapsulating material to resist environmental attack.Use the piezo-resistance of these encapsulating materials conventionally can only normally work below at 85 degrees Celsius.But for example, along with ecological deterioration and the working temperature of work constantly raise (piezo-resistance using in automobile circuit, working temperature can reach 125～150 degrees Celsius), existing piezo-resistance product is often because the heatproof moisture-proof of encapsulating material lost efficacy not.Encapsulating material manufacturer temporarily can't provide suitable 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 piezo-resistance that is applicable to hot and humid environment is provided.
The technical solution of the utility model is such: a kind of piezo-resistance that is applicable to hot and humid environment, comprise Zinc-oxide piezoresistor ceramics, silver electrode layer, insulating coating and two pins, its silver electrode layer is arranged on Zinc-oxide piezoresistor 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 Zinc-oxide piezoresistor ceramics, insulating coating is composite coating parcel body.
The above-mentioned piezo-resistance that is applicable to hot and humid environment, silver electrode layer comprises and is the electrode surface setting of ring-band shape along circular Zinc-oxide piezoresistor ceramics.
The above-mentioned piezo-resistance that is applicable to hot and humid environment, composite coating is polyimides and epoxy resin or polyimides and phenolic resins formation.
The above-mentioned piezo-resistance that is applicable to hot and humid environment, Zinc-oxide piezoresistor ceramics entirety is circular or square.
The utility model that adopts technique scheme, wraps up body by composite coating, and the method that high temperature resistant composite coating material carries out application to product has improved the performance of product under the hot and humid operational environment of 125 degree.By being set to annular at silver electrode layer, it is destroyed in the time of high-temperature soldering that the thickness that effectively guarantees silver electrode layer removes to stop silver layer, welding position, the silver electrode layer of annular middle part is to reveal empty major part to realize the silver slurry use amount that effectively reduces silver electrode layer simultaneously, thereby silver electrode layer ring limit retains the technique effect that effective silver-colored area keeps high throughflow ability.
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 vertical cross section structural representation of the present utility model;
Fig. 2 is horizontal section structural representation of the present utility model.
In figure: Zinc-oxide piezoresistor ceramics 1, silver electrode layer 2, insulating coating 3, pin 4, the inner 41, external connection end 42.
Embodiment
Consult shown in Fig. 1～2, a kind of piezo-resistance that is applicable to hot and humid environment of the present utility model, comprise Zinc-oxide piezoresistor 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 Zinc-oxide piezoresistor 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 Zinc-oxide piezoresistor ceramics 1, insulating coating is composite coating parcel body.Silver electrode layer 2 comprises and is the electrode surface setting of ring-band shape along circular Zinc-oxide piezoresistor ceramics 1.Composite coating is polyimides and epoxy resin or polyimides and phenolic resins formation.Zinc-oxide piezoresistor ceramics 1 entirety is circular or square.
The utility model, in the time of concrete production, wraps up body by the insulating coating 3 of composite coating, and the method that insulating coating 3 carries out application for high temperature resistant composite coating material to product has improved the performance of product under the hot and humid operational environment of 125 degree.By being set to annular at silver electrode layer, it is destroyed in the time of high-temperature soldering that the thickness that effectively guarantees silver electrode layer removes to stop silver layer, welding position, the silver electrode layer of annular middle part is to reveal empty major part to realize the silver slurry use amount that effectively reduces silver electrode layer simultaneously, thereby silver electrode layer ring limit retains the technique effect that effective silver-colored area keeps high throughflow ability.
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 (4)
1. one kind is applicable to the piezo-resistance of hot and humid environment, comprise Zinc-oxide piezoresistor ceramics (1), silver electrode layer (2), insulating coating (3) and two pins (4), it is characterized in that: silver electrode layer (2) is arranged on Zinc-oxide piezoresistor 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 Zinc-oxide piezoresistor ceramics (1), and insulating coating is composite coating parcel body.
2. the piezo-resistance that is applicable to hot and humid environment according to claim 1, is characterized in that: silver electrode layer (2) comprises and is the electrode surface setting of ring-band shape along circular Zinc-oxide piezoresistor ceramics (1).
3. the piezo-resistance that is applicable to hot and humid environment according to claim 1, is characterized in that: composite coating is polyimides and epoxy resin or polyimides and phenolic resins formation.
4. the piezo-resistance that is applicable to hot and humid environment according to claim 1, is characterized in that: Zinc-oxide piezoresistor ceramics (1) entirety is for circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014920.4U CN203607176U (en) | 2014-01-09 | 2014-01-09 | Piezoresistor suitable for high temperature and high humidity environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014920.4U CN203607176U (en) | 2014-01-09 | 2014-01-09 | Piezoresistor suitable for high temperature and high humidity environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607176U true CN203607176U (en) | 2014-05-21 |
Family
ID=50719840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014920.4U Expired - Lifetime CN203607176U (en) | 2014-01-09 | 2014-01-09 | Piezoresistor suitable for high temperature and high humidity environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139982A (en) * | 2014-05-26 | 2015-12-09 | 厚声工业股份有限公司 | Miniature fixed resistor |
-
2014
- 2014-01-09 CN CN201420014920.4U patent/CN203607176U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139982A (en) * | 2014-05-26 | 2015-12-09 | 厚声工业股份有限公司 | Miniature fixed resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model |
Correction item: Patentee Correct: Dongguan Littelfuse Electronics Co., Ltd. False: Dongguan Lingte Electronic Co., Ltd. Number: 21 Page: The title page Volume: 30 |
|
| CU03 | Publication of corrected utility model |
Correction item: Patentee Correct: Dongguan Littelfuse Electronics Co., Ltd. False: Dongguan Lingte Electronic Co., Ltd. Number: 21 Volume: 30 |
|
| ERR | Gazette correction |
Free format text: CORRECT: PATENTEE; FROM: DONGGUAN LINGTE ELECTRONIC CO., LTD. TO: LITTELFUSE INC. |
|
| RECT | Rectification | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
|
| CX01 | Expiry of patent term |