CN102623272A - Chip fuse - Google Patents
Chip fuse Download PDFInfo
- Publication number
- CN102623272A CN102623272A CN201210124463XA CN201210124463A CN102623272A CN 102623272 A CN102623272 A CN 102623272A CN 201210124463X A CN201210124463X A CN 201210124463XA CN 201210124463 A CN201210124463 A CN 201210124463A CN 102623272 A CN102623272 A CN 102623272A
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- Prior art keywords
- fuse
- protective layer
- layer
- blade
- insulating protective
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Abstract
The invention discloses a chip fuse, which comprises an insulation substrate and a fuse body metal wire, two terminal electrodes, a low-temperature fluxing metal layer and an insulation protection layer which are formed on the same surface of the insulation substrate, wherein the two terminal electrodes are respectively distributed on two sides of the fuse body metal wire and connected with the fuse body metal wire; the insulation protection layer completely covers the fuse body metal wire and partially covers the terminal electrodes; and the low-temperature fluxing metal layer is positioned between the fuse body metal wire and the insulation protection layer and totally overlapped with the insulation protection layer. Compared with the prior art, the chip fuse comprises the low-temperature fluxing metal layer positioned between the fuse body metal wire and the insulation protection layer; and when current rises continuously because a circuit fails or is abnormal, the low-temperature fluxing metal layer can effectively increase the speed of the chip fuse for fusion by accumulating a large amount of heat, so that important or noble devices in the circuit are protected.
Description
Technical field
The present invention relates to Electronic Protection class components and parts field, relate more specifically to a kind of blade fuse.
Background technology
Blade fuse has obtained extensive use in printed circuit board (PCB), along with the microminaturization of electronic device, its size is also more and more littler.Blade fuse is a kind of being installed in the circuit, to guarantee the electric elements of circuit safety operation.When circuit breaks down or is unusual, can be accompanied by electric current and constantly raise, the electric current of rising might damage some important devices or the valuable device in the circuit, also might burn circuit even cause fire.The application of said blade fuse can protect electronic equipment not receive the injury of overcurrent effectively, also can avoid electronic equipment because of the caused grievous injury of internal fault effectively.
At present; General blade fuse generally comprises ceramic substrate, fuse-link metal level, termination electrode and protective layer in the industry; Said fuse-link metal level and termination electrode all are formed on the same one side of said ceramic substrate; And interconnect, said protective layer covers said fuse-link metal level fully and part covers said protective layer.When the electric current in the circuit constantly raise, it is slower that said blade fuse is assembled the speed of heat, thereby can not apace self be fused with the important or valuable device in the protective circuit.
Therefore, based on the deficiency of above-mentioned blade fuse, be necessary to provide a kind of improved blade fuse to overcome above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can assemble a large amount of heats fast fusing self, thus the blade fuse of the important or valuable device in the protective circuit.
For realizing above-mentioned purpose; The invention provides a kind of blade fuse; Comprise insulating substrate and be formed at said insulating substrate with fuse-link wire, two end electrodes, insulating protective layer on the one side; Two said termination electrodes are distributed in said fuse-link both sides wiry respectively and are connected with said fuse-link wire, and said insulating protective layer covers said fuse-link wire fully and part covers said termination electrode, wherein; Said blade fuse also comprises: a low temperature flux metal layer between said fuse-link wire and insulating protective layer, said low temperature flux metal layer overlaps with said insulating protective layer fully.
Compared with prior art; Blade fuse of the present invention comprises a low temperature flux metal layer between fuse-link wire and insulating protective layer; When electric current breaks down because of circuit or constantly raise unusually; Said low temperature flux metal layer can be accelerated said blade fuse effectively and assemble a large amount of heats with the fusing self speed, thereby has protected the important or valuable device in the circuit.
Preferably, the main component of said insulating substrate is magnesia and alundum (Al.Compare with the insulating substrate that traditional blade fuse uses pure alundum (Al to process; The thermal conductivity of insulating substrate is lower among the present invention; Thereby allow said fuse-link wire a large amount of heat of accumulation under the situation of overload better, then self is fused with safety cutout circuit.
Preferably, said fuse-link main component wiry is a silver.Use copper-tin metal silk structure to compare with traditional blade fuse, the fuse-link wire among the present invention provides stronger surge tolerance.
Preferably, the main component of said low temperature flux metal layer is zinc-tin or zinc-tin aluminium.
Alternatively, said insulating protective layer is a glass material.
Alternatively, the material of said insulating protective layer is a foamable polymer, and foamable polymer has certain gap, fragment and heat when this space can be improved certain space and carried the fusing of said fuse-link wire, thus played the safeguard protection effect.In addition, said foamable polymer also can prevent distributing fast of preceding its heat of said fuse-link wire fusing effectively, thereby helps the fusing wiry of said fuse-link.
Particularly, said termination electrode comprises nickel metal film and the two-layer coating of tin metal film, and said nickel metal film is covered by said tin metal film.
Through following description and combine accompanying drawing, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structure chart of blade fuse one embodiment of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As stated; The invention provides a kind of blade fuse; Because said blade fuse comprises a low temperature flux metal layer between fuse-link wire and insulating protective layer; When electric current broke down because of circuit or constantly raise unusually, said low temperature flux metal layer can be accelerated said blade fuse effectively and assemble a large amount of heats with the fusing self speed, thereby has protected the important or valuable device in the circuit.
Please refer to Fig. 1, be a preferred embodiment of blade fuse of the present invention.As shown in the figure; Said blade fuse 100 comprises insulating substrate 10 and is formed at said insulating substrate 10 with fuse-link wire 12, two end electrodes 14, insulating protective layer 16, low temperature flux metal layer 18 on the one side; Two said termination electrodes 14 are distributed in the both sides of said fuse-link wire 12 respectively and are connected with said fuse-link wire 12; Said insulating protective layer 16 covers said fuse-link wire 12 fully and part covers said termination electrode 14; Low temperature flux metal layer 18 is between said fuse-link wire 12 and insulating protective layer 16, and said low temperature flux metal layer 18 overlaps with said insulating protective layer 16 fully.
Can know from above description; Said termination electrode 14 parts expose; Like this in the manufacture process of said blade fuse, soak the envelope operation like the plane and realize being connected between electrode and the said fuse-link wire 12 having offered more contact area for adopting, guaranteed excellent contact.
Preferably, the main component of said insulating substrate 10 is magnesia and alundum (Al.Compare with the insulating substrate that traditional blade fuse uses pure alundum (Al to process; The thermal conductivity of insulating substrate 10 is lower among the present invention; Thereby allow said fuse-link wire 12 a large amount of heat of accumulation under the situation of overload better, then self is fused with safety cutout circuit.
Preferably, the main component of said fuse-link wire 12 is a silver.Use copper-tin metal silk structure to compare with traditional blade fuse, the fuse-link wire 12 among the present invention is single component a---silver, thereby stronger surge tolerance is provided.
Preferably, the main component of said low temperature flux metal layer 18 is zinc-tin or zinc-tin aluminium.
In the present embodiment, the material of said insulating protective layer 16 is a foamable polymer, and foamable polymer has certain gap, fragment and heat when this space can be improved certain space and carried 12 fusing of said fuse-link wire, thus played the safeguard protection effect.In addition, said foamable polymer also can prevent distributing fast of preceding its heat of said fuse-link wire 12 fusing effectively, thereby helps the fusing of said fuse-link wire 12.
Alternatively, said insulating protective layer 16 is a glass material.
Particularly, said termination electrode 14 comprises nickel metal film and the two-layer coating of tin metal film, and said nickel metal film is covered by said tin metal film.
Invention has been described more than to combine most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (7)
1. blade fuse; Comprise insulating substrate and be formed at said insulating substrate with fuse-link wire, two end electrodes, insulating protective layer on the one side; Two said termination electrodes are distributed in said fuse-link both sides wiry respectively and are connected with said fuse-link wire; Said insulating protective layer covers said fuse-link wire fully and part covers said termination electrode; It is characterized in that said blade fuse also comprises: a low temperature flux metal layer between said fuse-link wire and insulating protective layer, said low temperature flux metal layer overlaps with said insulating protective layer fully.
2. blade fuse as claimed in claim 1 is characterized in that, the main component of said insulating substrate is magnesia and alundum (Al.
3. blade fuse as claimed in claim 1 is characterized in that, said fuse-link main component wiry is a silver.
4. blade fuse as claimed in claim 1 is characterized in that, the main component of said low temperature flux metal layer is zinc-tin or zinc-tin aluminium.
5. blade fuse as claimed in claim 1 is characterized in that, said insulating protective layer is a glass material.
6. blade fuse as claimed in claim 1 is characterized in that, the material of said insulating protective layer is a foamable polymer.
7. blade fuse as claimed in claim 1 is characterized in that, said termination electrode comprises nickel metal film and the two-layer coating of tin metal film, and said nickel metal film is covered by said tin metal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124463XA CN102623272A (en) | 2012-04-25 | 2012-04-25 | Chip fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124463XA CN102623272A (en) | 2012-04-25 | 2012-04-25 | Chip fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102623272A true CN102623272A (en) | 2012-08-01 |
Family
ID=46563121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210124463XA Pending CN102623272A (en) | 2012-04-25 | 2012-04-25 | Chip fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102623272A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319206A (en) * | 2014-10-20 | 2015-01-28 | 南京萨特科技发展有限公司 | Suspended sheet-metal electronic component and batch manufacturing method thereof |
| CN105340042A (en) * | 2013-05-02 | 2016-02-17 | 迪睿合株式会社 | Protective element |
| CN107706066A (en) * | 2017-10-12 | 2018-02-16 | 东莞市贝特电子科技股份有限公司 | Microminiature paster fuse |
| CN108321062A (en) * | 2018-02-08 | 2018-07-24 | 深圳可瑞高新材料股份有限公司 | A kind of circuit brake and manufacturing method |
| US11837540B2 (en) | 2019-05-02 | 2023-12-05 | KYOCERA AVX Components Corporation | Surface-mount thin-film fuse having compliant terminals |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494142A (en) * | 2009-03-05 | 2009-07-29 | 东莞市金华电子有限公司 | Novel thick film sheet type fuse and method of manufacturing the same |
| CN101657874A (en) * | 2007-11-08 | 2010-02-24 | 松下电器产业株式会社 | Circuit protective device and method for manufacturing the same |
| CN101794690A (en) * | 2010-03-18 | 2010-08-04 | 南京萨特科技发展有限公司 | Patch-type filamentous fuse and manufacturing method thereof |
| CN101944463A (en) * | 2010-08-31 | 2011-01-12 | 广东风华高新科技股份有限公司 | Film sheet fuse and preparation method thereof |
| CN201829441U (en) * | 2010-10-08 | 2011-05-11 | Aem科技(苏州)股份有限公司 | Surface mount fuse |
-
2012
- 2012-04-25 CN CN201210124463XA patent/CN102623272A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101657874A (en) * | 2007-11-08 | 2010-02-24 | 松下电器产业株式会社 | Circuit protective device and method for manufacturing the same |
| CN101494142A (en) * | 2009-03-05 | 2009-07-29 | 东莞市金华电子有限公司 | Novel thick film sheet type fuse and method of manufacturing the same |
| CN101794690A (en) * | 2010-03-18 | 2010-08-04 | 南京萨特科技发展有限公司 | Patch-type filamentous fuse and manufacturing method thereof |
| CN101944463A (en) * | 2010-08-31 | 2011-01-12 | 广东风华高新科技股份有限公司 | Film sheet fuse and preparation method thereof |
| CN201829441U (en) * | 2010-10-08 | 2011-05-11 | Aem科技(苏州)股份有限公司 | Surface mount fuse |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105340042A (en) * | 2013-05-02 | 2016-02-17 | 迪睿合株式会社 | Protective element |
| CN105340042B (en) * | 2013-05-02 | 2019-05-31 | 迪睿合株式会社 | Protection element |
| CN104319206A (en) * | 2014-10-20 | 2015-01-28 | 南京萨特科技发展有限公司 | Suspended sheet-metal electronic component and batch manufacturing method thereof |
| CN107706066A (en) * | 2017-10-12 | 2018-02-16 | 东莞市贝特电子科技股份有限公司 | Microminiature paster fuse |
| CN108321062A (en) * | 2018-02-08 | 2018-07-24 | 深圳可瑞高新材料股份有限公司 | A kind of circuit brake and manufacturing method |
| US11837540B2 (en) | 2019-05-02 | 2023-12-05 | KYOCERA AVX Components Corporation | Surface-mount thin-film fuse having compliant terminals |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |