CN203839150U - Thermal protection type voltage dependent resistor with high pass flow - Google Patents
Thermal protection type voltage dependent resistor with high pass flow Download PDFInfo
- Publication number
- CN203839150U CN203839150U CN201420014571.6U CN201420014571U CN203839150U CN 203839150 U CN203839150 U CN 203839150U CN 201420014571 U CN201420014571 U CN 201420014571U CN 203839150 U CN203839150 U CN 203839150U
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- Prior art keywords
- silver electrode
- electrode layer
- pin
- protection type
- silver
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- 230000001419 dependent effect Effects 0.000 title abstract 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052709 silver Inorganic materials 0.000 claims abstract description 81
- 239000004332 silver Substances 0.000 claims abstract description 81
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 20
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 22
- 229960001296 zinc oxide Drugs 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005253 cladding Methods 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The utility model discloses a thermal protection type voltage dependent resistor with the high pass flow. The thermal protection type voltage dependent resistor comprises an zinc oxide voltage dependent resistor ceramic chip, first silver electrode layers, an insulation sheet, a first pin, a second pin, a thermal fuse and an epoxy resin cladding layer, wherein the first silver electrode layers are respectively arranged on the upper surface and the lower surface of the zinc oxide voltage dependent resistor ceramic chip, the epoxy resin cladding layer wraps a body, at least one annular second silver electrode layer is arranged on the surfaces of the first silver electrode layers on the upper surface and the lower surface of the zinc oxide voltage dependent resistor ceramic chip, the first pin is welded on the second silver electrode layer on the lower surface of the zinc oxide voltage dependent resistor ceramic chip, the second pin is fixed on one side of the second silver electrode layer on the upper surface through the insulation sheet, one end of the thermal fuse is welded with the inner end of the second pin, and the other end of the thermal fuse is welded with the other side of the second silver electrode correspondingly. The thermal protection type voltage dependent resistor realizes technical effects of remaining the effective silver area, ensuring the product quality and reducing the cost when the silver paste consumption of the silver electrode layers is reduced.
Description
Technical field
The utility model relates to a kind of piezo-resistance, more particularly, relates in particular to a kind of hot protection type piezo-resistance with high throughflow.
Background technology
Heat protection piezo-resistance series is representing the new development of protection using integrated circuit; overtemperature protection piezo-resistance is utilized too high transient voltage and electric current in its special nonlinear characteristic absorbing circuit; and rely on self-heating and heat radiation to discharge the high electric current of transient state and the voltage that absorb; it is made up of multiple radial lead burning piezo-resistances, comprises one and is exclusively used in the overheated integrated thermal active element that causes disconnecting causing because of the various conditions of abnormal overvoltage, Limited Current and UL1449 general introduction.Overtemperature protection piezoresistance electrode material is silver layer; it uses high temperature firelock welding (firelock flame envelope temperature reaches 1200 DEG C) in the time of pin and the welding of hot fuse; in high temperature firelock when welding, very easily destroys silver layer, will cause stagflation when through-flow to blow pad after silver layer is destroyed.For prevent when welding firelock high temperature burn out silver layer and cause through-flow stagflation to be blown, it is destroyed in the time of high-temperature soldering that the thickness that need repeatedly print silver (more than 2 times) and increase silver layer removes to stop silver layer, but repeatedly Yin Yin can increase again the cost of product greatly.
Meanwhile, current design insurance silk is linearity, is to meet the requirement disconnecting, and needs gappedly between fuse and silver-colored face, and simultaneously fuse and pin weld that time point can produce tin ball or dry joint causes product failure.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; a kind of hot protection type piezo-resistance with high throughflow is provided; when realizing the silver slurry use amount that reduces silver electrode layer, retain effective silver-colored area, ensure product quality the technique effect reducing costs.Simultaneously required gapped between guarantee insurance silk and silver-colored face, and can ensure in the time of fuse and pin welding, to avoid producing tin ball or dry joint technique effect.
The technical solution of the utility model is such: a kind of hot protection type piezo-resistance with high throughflow, comprise Zinc-oxide piezoresistor ceramics, the first silver electrode layer, insulating trip, the first pin, the second pin, hot fuse wire and epoxy resin surrounding layer, the upper and lower surface of Zinc-oxide piezoresistor ceramics is respectively equipped with the first silver electrode layer, epoxy resin surrounding layer parcel body, the first silver electrode layer surface of its upper and lower surface is at least also provided with the second silver electrode layer of an annular, the first pin is welded on the second silver electrode layer of Zinc-oxide piezoresistor ceramics lower surface, the second pin is fixed on the second silver electrode layer one side of upper surface by insulating trip, the inner welding of one end of hot fuse wire and the second pin, the other end is corresponding to be welded with the opposite side of the second silver electrode layer.
The above-mentioned hot protection type piezo-resistance with high throughflow, hot fuse wire is provided with the kink of bending laterally at the welding ends of the second pin, forms skew gap between the silver electrode layer of kink and upper surface.
The above-mentioned hot protection type piezo-resistance with high throughflow, Zinc-oxide piezoresistor ceramics entirety is circular, and silver electrode layer covers the upper and lower surface of circular Zinc-oxide piezoresistor ceramics, and the second silver electrode layer is concentric circles annular and is arranged on silver electrode layer surface.
The above-mentioned hot protection type piezo-resistance with high throughflow, the inner overlap joint welding of the end of hot fuse wire and the second pin.
The above-mentioned hot protection type piezo-resistance with high throughflow, kink is curved.
The above-mentioned hot protection type piezo-resistance with high throughflow, insulating trip and the second pin are fixed on a side of the second silver electrode layer of upper surface by PUR.
Adopt the utility model of technique scheme, by be provided with at least the second silver electrode layer of one deck annular on the first silver electrode layer surface, it is destroyed in the time of high-temperature soldering that the thickness that effectively increases silver layer removes to stop silver layer, the second welding position, silver electrode layer middle part of annular is to reveal empty major part to realize the silver slurry use amount that effectively reduces silver electrode layer simultaneously, the the second silver electrode layer ring limit that increases silver thickness retains effective silver-colored area, thereby keeps the technique effect of high throughflow ability.Simultaneously, by hot fuse wire at the kink bending laterally with the inner welding ends setting of the second pin, between the silver electrode layer of kink and upper surface, form skew gap, the skew gap forming can ensure gap between hot fuse wire and silver electrode layer, overlap joint welding simultaneously can contact copper cash tin ball or dry joint when stopping fuse and copper wire welding completely and occur, thus the stabilised quality of guarantee product.
The utility model is applied to SPD product, alternating current circuit panel protection module, alternating current circuit power supply, surge protection bar connector, ac power meter, repositionable AC power tap, GFCI(ground-fault interrupter), UPS(uninterruptible power system), white domestic appliances, plug-in type SPD, current transformer and AC/DC power supply etc.
Brief description of the drawings
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 the cross-sectional view of the utility model instantiation;
Fig. 2 is the syndeton schematic diagram of the concrete upper surface of the utility model;
Fig. 3 is the structural representation of the hot fuse wire of the utility model.
In figure: Zinc-oxide piezoresistor ceramics 1, the first silver electrode layer 2, thickening silver electrode layer 21, insulating trip 3, the first pin 4, the second pins 5, hot fuse wire 6, kink 61, epoxy resin surrounding layer 7, PUR 8.
Embodiment
Consult shown in Fig. 1～3, a kind of hot protection type piezo-resistance with high throughflow of the present utility model, comprise Zinc-oxide piezoresistor ceramics 1, the first silver electrode layer 2, insulating trip 3, the first pin 4, the second pin 5, hot fuse wire 6 and epoxy resin surrounding layer 7, the upper and lower surface of Zinc-oxide piezoresistor ceramics 1 is respectively equipped with the first silver electrode layer 2, epoxy resin surrounding layer 3 wraps up body, the first silver electrode layer 2 surface of upper and lower surface are at least also provided with the second silver electrode layer 21 of an annular, the first pin 4 is welded on the second silver electrode layer 21 of Zinc-oxide piezoresistor ceramics 1 lower surface, the second pin 5 is fixed on a side of the second silver electrode layer 21 of upper surface by insulating trip 3, the inner welding of one end of hot fuse wire 6 and the second pin 5, the other end is corresponding to be welded with the opposite side of the second silver electrode layer 21.
The above-mentioned hot protection type piezo-resistance with high throughflow, hot fuse wire 6 is provided with the kink 61 of bending laterally at the welding ends of the second pin 5, forms skew gap between the silver electrode layer 2 of kink 61 and upper surface.
The above-mentioned hot protection type piezo-resistance with high throughflow; Zinc-oxide piezoresistor ceramics 1 entirety is circular; silver electrode layer 2 covers the upper and lower surface of circular Zinc-oxide piezoresistor ceramics 1, and the second silver electrode layer 21 is concentric circles annular and is arranged on silver electrode layer 2 surface.
The end of hot fuse wire 6 and the inner overlap joint welding of the second pin 5.
Kink 61 is curved.
Insulating trip 3 and the second pin 5 are fixed on a side of the second silver electrode layer 21 of upper surface by PUR 8.
The utility model is in the time of concrete production, be provided with two layers of second annular silver electrode layer 21 on the first silver electrode layer 2 surface, the first pin 4 and hot fuse wire 6 all with the second silver electrode layer 21, it is destroyed in the time of high-temperature soldering that the thickness that the second silver electrode layer 21 increases silver layer effectively removes to stop silver layer, the second silver electrode layer 21 welding position, middle part of annular are to reveal empty major part to realize the silver slurry use amount that effectively reduces silver electrode layer simultaneously, the the second silver electrode layer 21 that increases silver thickness encircles limit and retains effective silver-colored area, thereby keeps the technique effect of high throughflow ability.Simultaneously, hot fuse wire 6 at the kink 61 bending laterally with the welding ends setting of second pin the inner, between the silver electrode layer 2 of kink 61 and upper surface, form skew gap, the skew gap forming can ensure gap between hot fuse wire 6 and silver electrode layer 2, overlap joint welding simultaneously can contact copper cash tin ball or dry joint when stopping fuse and copper wire welding completely and occur, thus the stabilised quality of guarantee product.
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 (6)
1. one kind has the hot protection type piezo-resistance of high throughflow, comprise Zinc-oxide piezoresistor ceramics (1), the first silver electrode layer (2), insulating trip (3), the first pin (4), the second pin (5), hot fuse wire (6) and epoxy resin surrounding layer (7), the upper and lower surface of Zinc-oxide piezoresistor ceramics (1) is respectively equipped with the first silver electrode layer (2), epoxy resin surrounding layer (7) parcel body, it is characterized in that: the first silver electrode layer (2) surface of upper and lower surface is at least also provided with the second silver electrode layer (21) of an annular, the first pin (4) is welded on the second silver electrode layer (21) of Zinc-oxide piezoresistor ceramics (1) lower surface, the second pin (5) is fixed on a side of the second silver electrode layer (21) of upper surface by insulating trip (3), the inner welding of one end of hot fuse wire (6) and the second pin (5), the other end is corresponding to be welded with the opposite side of the second silver electrode layer (21).
2. the hot protection type piezo-resistance with high throughflow according to claim 1; it is characterized in that: hot fuse wire (6) is provided with the kink (61) of bending laterally at the welding ends of the second pin (5), between the silver electrode layer (2) of kink (61) and upper surface, form skew gap.
3. the hot protection type piezo-resistance with high throughflow according to claim 1; it is characterized in that: Zinc-oxide piezoresistor ceramics (1) entirety is for circular; silver electrode layer (2) covers the upper and lower surface of circular Zinc-oxide piezoresistor ceramics (1), and the second silver electrode layer (21) is concentric circles annular and is arranged on silver electrode layer (2) surface.
4. the hot protection type piezo-resistance with high throughflow according to claim 1, is characterized in that: the inner overlap joint welding of the end of hot fuse wire (6) and the second pin (5).
5. the hot protection type piezo-resistance with high throughflow according to claim 1, is characterized in that: kink (61) is curved.
6. the hot protection type piezo-resistance with high throughflow according to claim 1, is characterized in that: insulating trip (3) and the second pin (5) are fixed on a side of the second silver electrode layer (21) of upper surface by PUR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014571.6U CN203839150U (en) | 2014-01-10 | 2014-01-10 | Thermal protection type voltage dependent resistor with high pass flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014571.6U CN203839150U (en) | 2014-01-10 | 2014-01-10 | Thermal protection type voltage dependent resistor with high pass flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839150U true CN203839150U (en) | 2014-09-17 |
Family
ID=51516962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014571.6U Expired - Lifetime CN203839150U (en) | 2014-01-10 | 2014-01-10 | Thermal protection type voltage dependent resistor with high pass flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600214A (en) * | 2019-09-02 | 2019-12-20 | 深圳市劲阳电子有限公司 | Intrinsic safety piezoresistor |
-
2014
- 2014-01-10 CN CN201420014571.6U patent/CN203839150U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600214A (en) * | 2019-09-02 | 2019-12-20 | 深圳市劲阳电子有限公司 | Intrinsic safety piezoresistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |