CN202839511U - SMT (surface mount technology) fuse - Google Patents
SMT (surface mount technology) fuse Download PDFInfo
- Publication number
- CN202839511U CN202839511U CN 201220540659 CN201220540659U CN202839511U CN 202839511 U CN202839511 U CN 202839511U CN 201220540659 CN201220540659 CN 201220540659 CN 201220540659 U CN201220540659 U CN 201220540659U CN 202839511 U CN202839511 U CN 202839511U
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- China
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- fuse
- insulation board
- type
- middle level
- lower cover
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- Expired - Lifetime
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Abstract
The utility model relates to an SMT (surface mount technology) fuse which mainly comprises an upper insulating plate, a middle insulating plate, a lower insulating plate, a fuse wire and two V-shaped electrodes. The center of the middle insulating plate is provided with a solid fusant cell and a fusant cavity. Two ends of the fuse wire are tightly attached to the two V-shaped electrodes and are covered with sliver paste, so that the SMT fuse is high in conductivity, low in resistance, low in power consumption and high in reliability in terms of safety breaking performance and fusing characteristic. The SMT fuse is suitable for various electronic circuits.
Description
Technical field
The utility model relates to a kind of fuse, and particularly a kind of surface-adhered type fuse belongs to electronic devices and components.
Background technology
Along with science and technology fast development with rapid changepl. never-ending changes and improvements; the electronic product technology is day by day diversified, complicated, extra smallization of volume; also the present canot compare with the past for the protection component of the electronic circuit in each field; simple glass tube fuse in the past; far do not satisfy modern product demand, but developed into a novel electron protection component field that classification is various.Wherein surface mounting fuse protector is exactly one of new a kind of frivolous little new-type element that emerges, and is applied widely.The inside and outside relevant enterprise in native land constantly researches and develops and new product constantly goes on the market, and such as " suspended-fuse-wire-type surface-mount fuse ", this fuse connects reliable, and solderability is high, but structure is complicated, and processing technology is numerous and diverse, and cost is high.
The utility model content
The purpose of this utility model provides a kind of have good electric conductivity and low resistance, low-power consumption and highly reliable safe interrupting performance and the surface-adhered type fuse of operating chacteristics.
The utility model is achieved in that it comprises V-type front electrode, loam cake insulation board, V-type backplate, silver paste parcel fuse coat, fuse, lower cover insulation board, it also comprises a middle level insulation board, wherein: also be provided with solid solution groove and melt cavity at the center of described middle level insulation board, described fuse passes described melt cavity by described solid solution groove and fixes within it, described V-type front electrode and described V-type backplate are close in the two ends that described fuse Naked reveals, and apply parcel by described silver paste parcel fuse coat.
The V-type front electrode of described loam cake insulation board, the V-type backplate of lower cover insulation board form by printing, etching and processing.
Described loam cake insulation board, middle level insulation board, lower cover insulation board are with bonding, extruding, heating cure processing all-in-one-piece.
The utility model is owing to adopting said structure; therefore this product has good electric conductivity and low resistance, low-power consumption and highly reliable safe interrupting performance and operating chacteristics; when making electronic circuit protected device abnormal electric current; thereby the current value by fuse produces heat under current limit impels valuable device in fuse self the fusing protection electronic circuit; play the safety that prevents fire and circuit, and technique is simple, cost is low.
Description of drawings
Fig. 1 is the perspective view of analysing and observe of the present utility model
Fig. 2 is overall structure schematic diagram after the processing of middle level of the present utility model insulation board
Fig. 3 is overall structure schematic diagram after the processing of upper and lower cover insulation board of the present utility model
Fig. 1---among Fig. 3: 1.V type front electrode, 2. loam cake insulation board, 3.V type backplate, 4. middle level insulation board, 5. silver paste parcel fuse coat, 6. solid solution groove, 7. melt cavity, 8. fuse, 9. lower cover insulation board.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing
Such as Fig. 1---shown in Figure 3, loam cake insulation board 2, middle level insulation board 4, lower cover insulation board 9 all are to adopt pcb board and high molecular fire retardant plastic warp etching and processing to form, fuse 8 usefulness copper alloy silks and precious metal alloys material are made, and the materials such as V-type front electrode 1, V-type backplate 3 usefulness Copper Foils, copper strips silver slurry form by printing, etching and processing.Be provided with solid solution groove 6, melt cavity 7 in the center of middle level insulation board 4, fuse 8 passes melt cavity 7, also fixes within it by solid solution groove 6, passes V-type front electrode 1, V-type backplate 3.Fuse 8 two ends Naked dew part is close to V-type front electrode 1, V-type backplate 3 sides and is stained with slurry with silver paste coat 5 and applies, make silver paste parcel fuse 8 and V-type front electrode 1,3 conductings of V-type backplate, guarantee that V-type front electrode 1, V-type backplate 3 make with fuse 8 by electronickelling tin and contact well, improve the solderability of product, reduced rosin joint and failure likelihood.Simultaneously make a silver paste coat through silk screen printing, the further like this reliability that improves product at two ends and solid solution groove 6 places of middle level insulation board 4.
The concrete course of processing is: first with loam cake insulation board 2, the copper-clad surface of lower cover insulation board 9 is obtained V-type front electrode 1 with mask printing (exposure) by engraving method, V-type backplate 3, the loam cake insulation board 2 of V-type front electrode 1 will be obtained, the lower cover insulation board 9 of V-type backplate 3 obtains V-type front electrode 1 by particular manufacturing craft and high velocity ram machine, V-type backplate 3 holes, again with thickness approximately the middle level insulation board 4 of 1.0mm put into particular manufacturing craft and carry out punching with accurate punching machine and obtain melt cavity 7, the V-type slot electrode, after punching is complete middle level insulation board 4 put into special-purpose gaining machine cutting solid solution groove 6, then fuse 8 is entered solid solution groove 6 by melt cavity 7 and fix.Adopting silk screen printing that the silver paste coat is imported in the solid solution groove 6 and enters in the continuous tunnel furnace dries.
Electrode backside coating special glass fiber glue with loam cake insulation board 2, the glue face carries out bonding towards solid solution groove 6 faces of middle level insulation board 4, again with lower cover insulation board 9 electrode backside coating special glass fiber glue, the glue face carries out bonding towards the another side of the solid solution groove 6 of middle level insulation board 4, bonding loam cake insulation board 2, middle level insulation board 4, lower cover insulation board 9 are put into hydraulic press and pushed, heating cure insulation board in aggregates.
Holistic insulation board is cut, product after the cutting is close to the V-type front electrode 1 of middle level insulation board 4, the side of V-type backplate 3 with particular manufacturing craft with the two terminal filament heads that fuse 8 Naked reveal, with the silver slurry silver slurry is carried out in insulation board V-type electrode both sides and soak envelope, sintering, curing, insulation board 4V type electrode side, middle level and upper and lower cover insulation board V-type electrode are become one, and insulation board vertically cut, cut complete rear to product V-type electrode carry out nickel plating, tin surfaces is processed.
Surface-adhered type fuse of the present utility model, its fuse 8 is the melt cavitys 7 through middle level insulation board 4, pass solid solution groove 6, silk head and V-type front electrode 1 that two Naked reveals, V-type backplate 3 is fixed together, again with loam cake insulation board 2, lower cover insulation board 9 carries out bonding to its middle level insulation board 4 and electrode is partly soaked the envelope electroplating processes with the silver slurry, guaranteed the reliability that the product fuse connects, and the integral insulation plate divide three layers bonding, extruding, structure optimal way and the distribution of curing science, thereby ensure the reliability of product when the fault current breaking current, fail safe, owing to being provided with a melt cavity 7 at the center of middle level insulation board 4, being conducive to like this product has enough spaces to make its gasification when running into fault current and breaking current, be conducive to the disjunction of product and the raising of insulating resistance value, safe and reliable guarantee is provided.
Claims (3)
1. surface-adhered type fuse, comprise V-type front electrode (1), loam cake insulation board (2), V-type backplate (3), silver paste parcel fuse coat (5), fuse (8), lower cover insulation board (9), characterized by further comprising a middle level insulation board (4), wherein: also be provided with solid solution groove (6) and melt cavity (7) at the center of described middle level insulation board (4), described fuse (8) passes described melt cavity (7) by described solid solution groove (6) and fixes within it, described V-type front electrode (1) and described V-type backplate (3) are close in the two ends that described fuse (8) Naked reveals, and apply parcel by described silver paste parcel fuse coat (5).
2. surface-adhered type fuse according to claim 1 is characterized in that the V-type front electrode (1) of described loam cake insulation board (2), the V-type backplate (3) of lower cover insulation board (9) form by printing, etching and processing.
3. surface-adhered type fuse according to claim 1 and 2 is characterized in that described loam cake insulation board (2), middle level insulation board (4), lower cover insulation board (9) are with bonding, extruding, heating cure processing all-in-one-piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540659 CN202839511U (en) | 2012-10-19 | 2012-10-19 | SMT (surface mount technology) fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540659 CN202839511U (en) | 2012-10-19 | 2012-10-19 | SMT (surface mount technology) fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839511U true CN202839511U (en) | 2013-03-27 |
Family
ID=47951155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220540659 Expired - Lifetime CN202839511U (en) | 2012-10-19 | 2012-10-19 | SMT (surface mount technology) fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839511U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810527A (en) * | 2016-04-22 | 2016-07-27 | 南京萨特科技发展有限公司 | Current protector and manufacturing method |
| CN106024549A (en) * | 2016-07-13 | 2016-10-12 | 南京萨特科技发展有限公司 | Current protector and manufacturing method |
| CN106252044A (en) * | 2016-09-12 | 2016-12-21 | 冯发春 | A kind of Novel magnetic element/device structure |
-
2012
- 2012-10-19 CN CN 201220540659 patent/CN202839511U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810527A (en) * | 2016-04-22 | 2016-07-27 | 南京萨特科技发展有限公司 | Current protector and manufacturing method |
| CN105810527B (en) * | 2016-04-22 | 2019-03-01 | 南京萨特科技发展有限公司 | A kind of current protector and manufacturing method |
| CN106024549A (en) * | 2016-07-13 | 2016-10-12 | 南京萨特科技发展有限公司 | Current protector and manufacturing method |
| CN106252044A (en) * | 2016-09-12 | 2016-12-21 | 冯发春 | A kind of Novel magnetic element/device structure |
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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: 20130327 |
|
| CX01 | Expiry of patent term |