CN1870184A - Thermal protection anti-explosion piezo-resistance - Google Patents
Thermal protection anti-explosion piezo-resistance Download PDFInfo
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- CN1870184A CN1870184A CN 200610021223 CN200610021223A CN1870184A CN 1870184 A CN1870184 A CN 1870184A CN 200610021223 CN200610021223 CN 200610021223 CN 200610021223 A CN200610021223 A CN 200610021223A CN 1870184 A CN1870184 A CN 1870184A
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Abstract
An explosion-proof pressure sensitive resistance of heat protection type consists of shell and pressure sensitive resistance being set in shell and being formed by pressure sensitive ceramic base plate and insulation packaging layer for packaging said base plate. It is featured as applying either of the first or the second leading out electrode as fuse type of leading out electrode formed by two leading pins and fusing section, using said fusing section to connect two said leading pins and using low melting point conductive material to prepared said fusing section.
Description
Technical field
The present invention relates to a kind of electronic devices and components, especially a kind of thermal protection anti-explosion piezo-resistance.
Background technology
Varistor is widely used in the various electronic equipments as a kind of surge protection element; when extraneous surge energy surpasses the tolerance of piezo-resistance rapidly; or when piezo-resistance under extraneous surge energy repeated stock and when bad change takes place, piezo-resistance can breakdown short circuit.In side circuit, piezo-resistance is connected across between the live wire and zero line of power supply often, transient energy is very big during short circuit, the punch through damage place can produce localized hyperthermia, the insulation and moisture that voltage-sensitive ceramic substrate outside may be wrapped up in envelope be wrapped up in seal (being main material with organic materials such as epoxy resin usually) and ignite and follow porcelain body to burst, and might cause electric equipment such as air-conditioning on fire when serious.
At this potential safety hazard, there have been some technical measures to be used to prevent the generation of accident on fire.For example, the applicant once disclosed a kind of varistor with anti-flaming function in Chinese utility model patent ZL200420033754.9 number, this varistor has insulation shell and is encapsulated in the interior piezo-resistance main body of insulation shell, described piezo-resistance main body is by the voltage-sensitive ceramic substrate and seal is wrapped up in the insulation that the voltage-sensitive ceramic substrate is sealed constituted, be provided with the interior electrode of two separation on the surface of described voltage-sensitive ceramic substrate, on the piezo-resistance main body, be connected with first extraction electrode and second extraction electrode, one end of described first extraction electrode and second extraction electrode is connected with two interior electrodes conduct of described voltage-sensitive ceramic substrate surface respectively, the other end of described first extraction electrode and second extraction electrode passes insulation and wraps up in seal and extend to outside the insulation shell, it is characterized in that having the gap and constituting airtight powder accommodation cavity between the outer wall of the inwall of described insulation shell and piezo-resistance main body, in described powder accommodation cavity, be filled with insulation and do not fire powder and constitute powder bed is not fired in the insulation of piezo-resistance main body parcel.But the technical scheme that this patent provides is extremely simple effective, it has solved the technical barrier that exists in varistor manufacturing field for a long time, the manufacturing cost of product increases few, can prevent effectively because the electrical equipment pyrophoricity accident that arc discharge causes, and can alleviate of the transmission of high heat to shell, alleviate porcelain body and burst the destruction of generation, the user also can make it and the supporting use of available circuit plate easily.In addition, in above-mentioned patent, give the further improvement project that pore is set on the shell wall of housing, so that when the piezo-resistance puncture short, in time discharge the hot gas that generates in the housing, like this, even adopt thin or the lower housing of intensity, also can avoid housing when the piezo-resistance puncture short, to occur bursting, thereby help reducing the cost of manufacture of product as far as possible.
The given technical scheme of above-mentioned patent has plurality of advantages, but recent studies show that, though above-mentioned patented technology product can prevent the electrical equipment pyrophoricity accident, but the heat that produces in the punch through damage process is still very high, has the insulation shell of minority product the hot melt distortion to occur.Therefore, can also improve, thereby the heat that produces can reduce damage of product further the time improves the security of products energy the technical scheme of above-mentioned patent.
Summary of the invention
The objective of the invention is the structure of above-mentioned existing product is improved, so that a kind of thermal protection anti-explosion piezo-resistance is provided.
Find by testing us, extraneous surge energy impacts most cases and is divided into two kinds of macro-energy surge and little energy surges, when extraneous surge energy surpasses the tolerance of piezo-resistance rapidly (macro-energy surge), piezo-resistance can be produced high temperature by the moment puncture short, once discloses a kind of varistor with anti-flaming function in Chinese utility model patent ZL200420033754.9 number at this problem of macro-energy surge the applicant and has solved.But fail the problem of little energy surge repeated stock gradual slow deterioration failure is proposed the technical solution scheme.When extraneous surge energy repeated stock piezo-resistance allowed the tolerance of piezo-resistance drop to gradually can to take place bad change state, piezo-resistance also can produce high temperature and final breakdown short circuit gradually.In this process, extraneous surge energy repeated stock piezo-resistance allows it produce high temperature but during not by final puncture short, the surface temperature of piezo-resistance porcelain body is near about 1000 degrees centigrade, and its high temperature that continues can be transmitted to insulation shell, cause the distortion of housing hot melt, even break.It is to be allowed to condition under the high temperature and to open circuit by thermal release device is set that heat protection pressure sensitive resistor is also arranged now; the applicant also once disclosed hot protection type varistor in order to head it off in Chinese utility model patent ZL02222055.0 number; but; thermal release device has action element, exists many disadvantages such as complex structure, poor reliability, manufacturing process are loaded down with trivial details, waste material.Owing to have action element, enclosure interior is not easy to the filling applied fireproofing, therefore can not take into account the anti-flaming function of piezo-resistance when the moment puncture of macro-energy surge.In sum, the heat protection problem when fire-retardant problem when existing varistor all can not solve the macro-energy surge simultaneously and punctures piezo-resistance and the repeated stock of little energy surge cause slow deterioration, thus constituted a technical barrier.
At this new technical problem, we have proposed a kind of like this technical scheme: in first extraction electrode and second extraction electrode that connects on the piezo-resistance main body, go up one of at least therein the fusing section that is made of the low melting point electric conducting material is set.
Specifically; thermal protection anti-explosion piezo-resistance of the present invention has housing and is contained in the interior piezo-resistance main body of housing; described piezo-resistance main body is by the voltage-sensitive ceramic substrate and seal is wrapped up in the insulation that the voltage-sensitive ceramic substrate is sealed constituted; be provided with the interior electrode of two separation on the surface of described voltage-sensitive ceramic substrate; on the piezo-resistance main body, be connected with first extraction electrode and second extraction electrode; one end of described first extraction electrode is connected with two interior electrodes conduct of described voltage-sensitive ceramic substrate surface respectively with an end of second extraction electrode; the other end of the other end of described first extraction electrode and second extraction electrode passes insulation and wraps up in seal and extend to outside the housing; have the gap between the outer wall of the inwall of described housing and piezo-resistance main body and constitute container cavity; it is characterized in that one of them is by the first pin segment at least in described first extraction electrode and second extraction electrode; the Fuse Type extraction electrode that the second pin segment and fusing section constitute; described the first pin segment and the second pin segment link by the fusing section, and described fusing section is made of the low melting point electric conducting material.
Fusing section described in the present invention is made of the low melting point electric conducting material.The low melting point electric conducting material here can be low-melting-point metal or low melting point nonmetal (as conductive rubber) etc., and low-melting-point metal promptly is meant normally used scolding tin and other alloys etc.
One of them is the Fuse Type extraction electrode that is made of the first pin segment, the second pin segment and fusing section at least in first extraction electrode described in the present invention and second extraction electrode, be meant that promptly first extraction electrode and second extraction electrode can be the Fuse Type extraction electrode also to be served as by one of them simultaneously.Consider easy, the factor such as save production cost of processing, recommend to allow first extraction electrode and second extraction electrode one of them serve as the Fuse Type extraction electrode.
Housing described in the present invention can be the housing of making of the insulation fire proofing, also can be the composite material casing that comprises insulation fire proofing and other materials.Certainly, the gap that has between the outer wall of the inwall of described housing and piezo-resistance main body is enough to isolate piezo-resistance when puncturing produce high hot, can also adopt non-fire proofing to make above-mentioned housing.In addition, in particular cases even can adopt metal material to make above-mentioned housing, as: in the gap that has between the outer wall of the inwall of housing and piezo-resistance main body filling the insulation fire proofing, and first extraction electrode that connects on the piezo-resistance main body and second extraction electrode are all and when having insulating material between the housing.
Among the present invention, described housing can be for having the housing of container cavity exhaust outlet, and the container cavity exhaust outlet of offering on the described housing makes container cavity be connected with outside.Above-mentioned container cavity exhaust outlet can be arranged to various ways according to concrete operating position, as: porous or air channel etc.When adopting the housing of this form, the hot gas that just can be effectively generates with piezo-resistance moment puncture short or when impacted by surge energy in time discharges outside the housing, like this, even being impacted by extraneous surge energy, piezo-resistance produces high temperature, also can avoid occurring the interior air expanded by heating of housing as far as possible and cause housing to burst, thereby help improving the security of products energy.When offering on housing when being used to discharge the exhaust outlet of hot gas, the shape and the size of exhaust outlet no longer are restricted, and this also helps the making of product.Cause the piezo-resistance accidental short circuit in the housing in order to prevent that foreign matters such as dust from entering, above-mentioned container cavity exhaust ports can also be provided with the exhaust outlet plugging structure that can open under gases at high pressure impact, as: exhaust outlet capping, exhaust outlet shutoff sheet or exhaust outlet shutoff bar etc.
In order effectively to prevent the piezo-resistance destruction that burning produces when puncturing, can be loaded with the ventilative ventilative applied fireproofing such as powder that do not fire of particle, insulation that do not fire of the ventilative fireproof fibre of insulation, insulation in the container cavity described in the present invention, can also allow the ventilative powder that do not fire of insulation that is contained in the container cavity constitute the ventilative powder bed that do not fire of the insulation of piezo-resistance main body parcel.In the present invention, the ventilative fireproof fibre of said insulation is fiber non-conductive and that can not burn, as fire resistance fibres such as common and inexpensive asbestos fibre or alumina silicate fibre, alumina fibre, silicon dioxide fibre, glass fibre or the like.The ventilative fireproof fibre of this insulation both can be thread, also can be cotton-shaped, can also be the ventilative fireproof fibre fabric of insulation that is woven into netted or other shape.Above-mentioned insulation is ventilative, and not fire particle then can be to be served as by particles of inorganic material such as quartz sands, and insulation is ventilative does not fire powder and then can be served as by mica powder, alumina powder, flake asbestos or the like.As long as above-mentioned applied fireproofing does not pass and to external leakage from it greater than the bore of container cavity exhaust outlet.
Ventilative filter fire bed and the cavity of not firing of insulation can also be set in the container cavity described in the present invention, the ventilative filter fire bed that do not fire of described insulation is between the outer wall of container cavity exhaust outlet and piezo-resistance main body, and described cavity is formed by the outer wall of piezo-resistance main body, the inwall and the ventilative filter fire bed corral that do not fire of insulation of housing.The ventilative filter fire bed that do not fire of above-mentioned insulation can be served as by applied fireproofing, also can be served as by the container cavity that is filled with applied fireproofing.When the present invention was provided with that insulation is ventilative does not fire the filter fire bed, because it exists, the particle diameter that powder is not fired in insulation just not can be subjected to the restriction of container cavity exhaust outlet bore.That is to say: even the bore of the particle diameter of powder less than the container cavity exhaust outlet do not fired in insulation, as long as the ventilative filter fire bed that do not fire of set insulation can stop insulation not fire powder to pass and to external leakage from it.Therefore, in the present invention, do not fire the powder except that still adopting quartz sand or mica powder, alumina powder, flake asbestos etc. to serve as above-mentioned insulation, can also adopt the less but better powdery inorganic combustion inhibitor of flame retardant effect of particle diameter, as aluminium-hydroxide powder or magnesium hydroxide powder or the like.When powdery inorganic combustion inhibitors such as above-mentioned aluminium-hydroxide powder of employing or magnesium hydroxide powder, in case the short circuit of piezo-resistance main body also produces localized hyperthermia, with the contacted powdery inorganic combustion inhibitor of the outer wall of piezo-resistance main body will decomposes and discharge water outlet, the water that is discharged can at high temperature be evaporated to water vapour, ventilative do not fire the filter fire bed and discharge by insulating again by the container cavity exhaust outlet, meanwhile, the temperature of piezo-resistance main body also can descend therefrom, thereby plays better flame retardant effect.
In the present invention, can be by suitably choosing the fusing point of the low melting point electric conducting material in the Fuse Type extraction electrode, make it just can melt fully at 80～300 degrees centigrade, make the Fuse Type extraction electrode be in off-state, like this, when extraneous surge energy repeated stock piezo-resistance allows its deterioration but before not by final puncture short gradually, the Fuse Type extraction electrode has been fused by high temperature and has made the piezo-resistance outage, avoided the final breakdown short circuit of piezo-resistance, therefore reliability is high, in addition, because low melting point electric conducting material itself is not an action element, when the lasting high heat that runs into the extraction electrode transmission melts it, can be penetrated in the less near space, thereby make the enclosure interior can the filling applied fireproofing.The fracture that low melting point electric conducting material fusing back forms is by piezo-resistance outage cooling; played the effect of hot protection; the probability that has reduced the piezo-resistance puncture short effectively and occurred bursting; even extraneous macro-energy surge impact causes piezo-resistance to be punctured by moment; the applied fireproofing of enclosure interior filling; allow it play fire protection flame retarding, absorb the effect that piezo-resistance bursts impact energy, strengthen the fire prevention anti-bomb energy of piezo-resistance.Heat protection problem when fire-retardant problem when the present invention solves the macro-energy surge simultaneously and punctures piezo-resistance and the repeated stock of little energy surge cause slow deterioration, scheme is clear and definite effective and simple in structure easy to make, has solved technical barrier with simple technological means.
Fusing section described in the present invention can be positioned at described container cavity and also can be positioned at outside the container cavity.When above-mentioned fusing section is positioned at container cavity; advantage is tangible: because above-mentioned fusing section is the weakest link on the Fuse Type extraction electrode; its intensity and temperature capacity are all poor than the first pin segment and the second pin segment; in storage with damage easily when transporting thermal protection anti-explosion piezo-resistance of the present invention, can allow housing protect effectively in the described container cavity to fuse section not by accidental damage so will fuse section be arranged on.In addition, when being welded on piezo-resistance on circuit board or the power consumption equipment, the extraction electrode welding ends welding temperature of piezo-resistance is higher usually, when described fusing section is positioned at described container cavity, respective distance extraction electrode welding ends is far away, though the welding ends temperature is higher, but weld time is shorter usually, fail in time to be delivered to fusing section when it is fused in the hot temperature of height, often welding is finished, like this, the speed of production and the quality of final products can be improved effectively, and difficulty of processing can be saved production cost, reduce by a relatively large margin.
Housing described in the present invention can be for having the housing of fusing section cavity, and described fusing section is positioned at the fusing section cavity of described housing, and described the first pin segment and the second pin segment link in fusing section cavity by the fusing section.When the fusing section was set like this, the low melting point electric conducting material of described fusing section will rest in the fusing section cavity after the high temperature melting that quilt continues, and can not trickle in other circuit, avoids causing short circuit and causes potential safety hazard.Described the first pin segment can also be fixedlyed connected with above-mentioned fusing section cavity wall respectively with the second pin segment, with its anti-intensity that fractures of further reinforcement, the corresponding low melting point electric conducting material of described fusing section that makes can satisfy under the situation of turn-on condition, the low-melting-point metal that working strength is lower serves as, as: solder stick etc.
Compared with the aforementioned existing similar products; heat protection problem when fire-retardant problem when thermal protection anti-explosion piezo-resistance of the present invention can solve the macro-energy surge simultaneously and punctures piezo-resistance and the repeated stock of little energy surge cause slow deterioration; and it is simple in structure easy to make; solved technical barrier with simple technological means, security performance is better, the scope of application is wider, be fit to mass industrialized production.
Content of the present invention further illustrates with the following Examples, but content of the present invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the structural representation of varistor among the embodiment 1.
Fig. 2 is the A of Fig. 1---the A cutaway view.
Fig. 3 is the B of Fig. 1---the B cutaway view.
Fig. 4 is the C of Fig. 1---the C cutaway view.
Fig. 5 is the structural representation of varistor among the embodiment 2.
Fig. 6 is the D of Fig. 5---the D cutaway view.
Fig. 7 is the structural representation of varistor among the embodiment 3.
Fig. 8 is the E of Fig. 7---the E cutaway view.
Fig. 9 is the structural representation of varistor among the embodiment 4.
Figure 10 is the F of Fig. 9---the F cutaway view.
Figure 11 is the structural representation of varistor among the embodiment 5.
Figure 12 is the G of Figure 11---the G cutaway view.
Figure 13 is the structural representation of varistor among the embodiment 6.
Figure 14 is the H of Figure 13---the H cutaway view.
Figure 15 is the structural representation of varistor among the embodiment 7.
Figure 16 is the I of Figure 15---the I cutaway view.
Embodiment
Embodiment 1: shown in Fig. 1～4; thermal protection anti-explosion piezo-resistance in the present embodiment has housing 1 and is contained in the interior piezo-resistance main body 2 of housing; described piezo-resistance main body 2 is by voltage-sensitive ceramic substrate 3 and seal 4 is wrapped up in the insulation that voltage-sensitive ceramic substrate 3 is sealed constituted; be provided with the interior electrode 5 of two separation on the surface of described voltage-sensitive ceramic substrate 3; 6; on piezo-resistance main body 2, be connected with first extraction electrode and second extraction electrode 7; one end of one end of described first extraction electrode and second extraction electrode 7 respectively with two interior electrodes 5 on described voltage-sensitive ceramic substrate 3 surfaces; 6 conductions connect; the other end of the other end of described first extraction electrode and second extraction electrode 7 passes insulation and wraps up in seal 4 and extend to outside the housing 1; have the gap between the outer wall of the inwall of described housing 1 and piezo-resistance main body 2 and constitute container cavity; it is characterized in that first extraction electrode in described first extraction electrode and second extraction electrode is by the first pin segment 8; the Fuse Type extraction electrode that the second pin segment 9 and fusing section 10 constitute; described the first pin segment 8 and the second pin segment 9 link by fusing section 10, and described fusing sections 10 is made of low-melting-point metal.
The section of fusing described in the present embodiment 10 is positioned at described container cavity.
Be loaded with the ventilative fireproof fibre 11 of insulation in the container cavity described in the present embodiment.
Embodiment 2: shown in Fig. 5～6, varistor in the present embodiment is similar to embodiment 1, and different is, in the present embodiment, described housing 1 is for having the housing of container cavity exhaust outlet 12, and the container cavity exhaust outlet of offering on the described housing 1 12 makes container cavity be connected with outside.
Embodiment 3: shown in Fig. 7～8, the varistor in the present embodiment is similar to embodiment 2, and different is in the present embodiment, to be loaded with the ventilative particle 13 that do not fire of insulation in the described container cavity.The ventilative particle 13 that do not fire of insulation herein is quartz sand.
Embodiment 4: shown in Fig. 9～10, varistor in the present embodiment is similar to embodiment 2, different is in the present embodiment, to be filled with the ventilative powder 14 that do not fire of insulation in the described container cavity and also to constitute the ventilative powder bed that do not fire of the insulation of piezo-resistance main body 2 parcels.The ventilative powder 14 that do not fire of insulation herein is flake asbestos.
Embodiment 5: shown in Figure 11～12, the varistor in the present embodiment is similar to embodiment 2, and different is in the present embodiment, to be provided with the exhaust outlet plugging structure 15 that can open at described container cavity exhaust outlet 12 places under gases at high pressure impact.The exhaust outlet plugging structure 15 of She Zhiing is the exhaust outlet capping herein.
Embodiment 6: shown in Figure 13～14, varistor in the present embodiment is similar to embodiment 2, different is, in the present embodiment, be provided with ventilative filter fire bed 16 and the cavity 17 of not firing of insulation in the described container cavity, the ventilative filter fire bed 16 that do not fire of described insulation is between the outer wall of container cavity exhaust outlet 12 and piezo-resistance main body 2, and described cavity 17 is formed by the outer wall of piezo-resistance main body 2, the inwall and ventilative filter fire bed 16 corrals that do not fire of insulation of housing 1.Ventilative not fire filter fire bed 16 be to be served as by the container cavity that is filled with applied fireproofing in insulation in the present embodiment, and applied fireproofing herein is the ventilative fireproof fibre of insulation.
Embodiment 7: shown in Figure 15～16, varistor in the present embodiment is similar to embodiment 2, different is, in the present embodiment, described housing 1 is for having the housing of fusing section cavity 18, described fusing section 10 is positioned at the fusing section cavity 18 of described housing, and described the first pin segment 8 and the second pin segment 9 link in fusing section cavity 18 by fusing section 10.
Claims (9)
1; a kind of thermal protection anti-explosion piezo-resistance; have housing and be contained in the interior piezo-resistance main body of housing; described piezo-resistance main body is by the voltage-sensitive ceramic substrate and seal is wrapped up in the insulation that the voltage-sensitive ceramic substrate is sealed constituted; be provided with the interior electrode of two separation on the surface of described voltage-sensitive ceramic substrate; on the piezo-resistance main body, be connected with first extraction electrode and second extraction electrode; one end of described first extraction electrode is connected with two interior electrodes conduct of described voltage-sensitive ceramic substrate surface respectively with an end of second extraction electrode; the other end of the other end of described first extraction electrode and second extraction electrode passes insulation and wraps up in seal and extend to outside the housing; have the gap between the outer wall of the inwall of described housing and piezo-resistance main body and constitute container cavity; it is characterized in that one of them is by the first pin segment at least in described first extraction electrode and second extraction electrode; the Fuse Type extraction electrode that the second pin segment and fusing section constitute; described the first pin segment and the second pin segment link by the fusing section, and described fusing section is made of the low melting point electric conducting material.
2, thermal protection anti-explosion type piezo-resistance as claimed in claim 1 is characterized in that described fusing section is positioned at described container cavity.
3, thermal protection anti-explosion type piezo-resistance as claimed in claim 1; it is characterized in that described housing is the housing with fusing section cavity; described fusing section is positioned at the fusing section cavity of described housing, and described the first pin segment and the second pin segment link in fusing section cavity by the fusing section.
4, thermal protection anti-explosion type piezo-resistance as claimed in claim 1 is characterized in that described housing is the housing with container cavity exhaust outlet, and the container cavity exhaust outlet of offering on the described housing makes container cavity be connected with outside.
5, thermal protection anti-explosion type piezo-resistance as claimed in claim 4 is characterized in that being provided with the exhaust outlet plugging structure that can open in described container cavity exhaust ports under gases at high pressure impact.
6,, it is characterized in that being loaded with in the described container cavity the ventilative fireproof fibre of insulation as claim 1 or 2 or 3 or 4 or 5 described thermal protection anti-explosion type piezo-resistances.
7,, it is characterized in that being loaded with in the described container cavity the ventilative particle that do not fire of insulation as claim 1 or 2 or 3 or 4 or 5 described thermal protection anti-explosion type piezo-resistances.
8,, it is characterized in that being filled with in the described container cavity the ventilative powder that do not fire of insulation and also constitute the ventilative powder bed that do not fire of the insulation of piezo-resistance main body parcel as claim 1 or 2 or 3 or 4 or 5 described thermal protection anti-explosion type piezo-resistances.
9, as claim 1 or 2 or 3 or 4 or 5 described thermal protection anti-explosion type piezo-resistances; it is characterized in that being provided with in the described container cavity ventilative filter fire bed and the cavity of not firing of insulation; the ventilative filter fire bed that do not fire of described insulation is between the outer wall of container cavity exhaust outlet and piezo-resistance main body, and described cavity is formed by the outer wall of piezo-resistance main body, the inwall and the ventilative filter fire bed corral that do not fire of insulation of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021223 CN1870184A (en) | 2006-06-22 | 2006-06-22 | Thermal protection anti-explosion piezo-resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610021223 CN1870184A (en) | 2006-06-22 | 2006-06-22 | Thermal protection anti-explosion piezo-resistance |
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| CN1870184A true CN1870184A (en) | 2006-11-29 |
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| CN 200610021223 Pending CN1870184A (en) | 2006-06-22 | 2006-06-22 | Thermal protection anti-explosion piezo-resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782955A (en) * | 2017-01-10 | 2017-05-31 | 广东百圳君耀电子有限公司 | Piezoresistive element with overtemperature protection |
| WO2020107190A1 (en) * | 2018-11-27 | 2020-06-04 | 深圳市辰驹电子科技有限公司 | Power frequency voltage withstanding and arc-extinguishing packaged varistor and packaging method |
-
2006
- 2006-06-22 CN CN 200610021223 patent/CN1870184A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782955A (en) * | 2017-01-10 | 2017-05-31 | 广东百圳君耀电子有限公司 | Piezoresistive element with overtemperature protection |
| CN106782955B (en) * | 2017-01-10 | 2018-08-17 | 广东百圳君耀电子有限公司 | Piezoresistive element with overheating protection |
| WO2020107190A1 (en) * | 2018-11-27 | 2020-06-04 | 深圳市辰驹电子科技有限公司 | Power frequency voltage withstanding and arc-extinguishing packaged varistor and packaging method |
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