CN209078071U - A kind of limit weld tabs - Google Patents
A kind of limit weld tabs Download PDFInfo
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- CN209078071U CN209078071U CN201821184129.2U CN201821184129U CN209078071U CN 209078071 U CN209078071 U CN 209078071U CN 201821184129 U CN201821184129 U CN 201821184129U CN 209078071 U CN209078071 U CN 209078071U
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- weld tabs
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Abstract
The utility model discloses a kind of limit weld tabs, belong to field of welding material, including weld tabs matrix and metal layer, and the metal layer is linked together or is dispersedly set to weld tabs intrinsic silicon；The weld tabs matrix includes matrix and weld tabs lower substrate on weld tabs, and the metal layer is linear by several wires or net distribution is constituted；Using metal layer as boundary layer, calendering is integrated for matrix and weld tabs lower substrate on the weld tabs；The metal layer flows when can limit weld tabs matrix melts toward lower.A kind of limit weld tabs of the utility model, limitation solder are flowed toward lower, to guarantee that solder thickness is uniform, improve the reliability of welding, and manufacturing cost is low, economical.
Description
Technical field
The utility model belongs to field of welding material, relates in particular to a kind of limit weld tabs.
Background technique
In semi-conductor discrete device Packaging Industry, the effect of solder is to be carried out lead, frame and crystal grain by welding
Connection forms firm circuit conducting and heat transfer, component is made to have stable, reliable service performance.According to making for solder
With technique difference, the form of solder is broadly divided into soldering paste, welding wire, 3 class of weld tabs.
With the particularity of increasingly accurate, the integrated and certain welding procedure of electronic component, existing soldering paste, welding wire etc.
Electronic component increasingly higher demands are unable to satisfy, there is weld tabs various shapes, molding precision, (solder and scaling powder) to use
The characteristics of amount is precisely, welding quality is stable, easy to use, production is simple and efficient, it is widely used in chip welding, optical fibre device
Welding, connector and terminal device weld, printing circuit board assembles and the fields such as Electronic Packaging, are increasingly subject to the blueness of electronics industry
It looks at.
But it applies in IGBT module, the big occasion of thick film circuit package area, welding surface has subtle out-of-flatness, Huo Zhe
During when non-planar welding, the solder of fusing can be flowed toward lower, caused eminence amount of solder just insufficient, influenced the matter of product
Amount.It is but urgently to be resolved at present there is no the technology for solving problems.
Utility model content
The purpose of this utility model is to provide a kind of limit weld tabs in view of the above shortcomings, intends to solve not plane-welding mistake
The solder of Cheng Zhong, fusing can be flowed toward lower, cause the non-uniform technical problem of solder thickness, and provide a kind of manufacturing cost warp
The organization plan of Ji.
To achieve the above object, the utility model provides the following technical solutions:
A kind of limit weld tabs, including weld tabs matrix 1 and metal layer 2, the metal layer 2 are linked together or are dispersedly set to weldering
Inside sheet matrix 1, the metal layer 2 can limit when weld tabs matrix 1 melts to be flowed toward lower.
Due to above structure, in the big occasion of package area, welding surface is larger, and required weld tabs area is also larger, when
When welding surface has subtle out-of-flatness, the solder of fusing can be flowed toward lower, cause eminence amount of solder just insufficient, solder thickness
Unevenly.By the way that metal layer 2 is arranged inside weld tabs matrix 1, the solder of flowing is divided into one piece of block region, slows down weld tabs base
The speed of overall flow after body 1 melts flows to limit when weld tabs matrix 1 melts toward lower.After solder is cooling, welding surface
Solder thickness keeps uniform.The thickness and size dimension of metal layer 2 are less than the thickness and size dimension of weld tabs matrix 1.Weld tabs base
, can be by the way that solder alloy be melted into solder alloy solution when for integral type when body 1 can be integral type or discrete, it will
Solder alloy solution is poured or is squeezed into mold, fixes the position of metal layer 2, is cooled and shaped, and is then carried out punching press, is cut
The processes such as cut, polish.Metal layer 2 is linked together or is dispersedly set to inside weld tabs matrix 1, as long as setting at readily flowed position
It sets, just can reach the technical effect of limitation solder flowing.
Further, the weld tabs matrix 1 includes matrix 11 and weld tabs lower substrate 12 on weld tabs, matrix 11 on the weld tabs
It with metal layer 2 is boundary layer with weld tabs lower substrate 12, calendering is integrated.
Due to above structure, matrix 11 and weld tabs lower substrate 12 are clipped in about 2 two sides of metal layer on weld tabs, and rolling is one
Body.Weld tabs matrix 1 is separated structure.The solder alloy material of needs is first passed through into melting, material strip shape is rolled into, two panels is welded
Material alloy material band (matrix 11 and weld tabs lower substrate 12 i.e. on weld tabs) clamps metal layer 2, by calender by matrix 11 on weld tabs,
Metal layer 2 and weld tabs lower substrate 12 press to the thickness of needs, are molded with a mold out the shape and size needed.Processing technology letter
It is single economical, it is suitable for batch production, thickness is uniform, and the size and shape of preformed soldering are controllable.
Further, 12 size of matrix 11 and weld tabs lower substrate, material are all the same on the weld tabs.
Due to above structure, matrix 11 and weld tabs lower substrate 12 are identical on weld tabs, it is only necessary to be rolled into a Seed packaged band, so that it may
Batch uses, it is ensured that the uniformity of the metallics of weld tabs matrix 1 and the economy of product.
Further, for the metal layer 2 under the conditions of equal ambient, fusing point is higher than the fusing point 49 DEG C ~ 73 of weld tabs matrix 1
DEG C or 500 DEG C or more.
Due to above structure, 2 fusing point of metal layer necessarily is greater than weld tabs matrix 1, when can just play the limitation fusing of weld tabs matrix 1
It is flowed toward lower.The difference of fusing point according to selected 1 material of weld tabs matrix, 2 material of metal mesh, is soldered material, processing work
The comprehensive aspect such as skill, price determines.When the difference of fusing point is smaller, 49 DEG C ~ 73 DEG C of fusing point may be selected, when the difference of fusing point is larger,
It may be selected 500 DEG C or more.
Further, the metal layer 2 is made of several sheet metals, or by several 21 threadiness of wires or netted point
Cloth is constituted.
Due to above structure, metal layer 2 will be divided into one piece of block region by sheet metal or wire in weld tabs matrix 1.
Wire 21 can be regard as a rule line, carry out region division, wire 21 can also woven and be reticulated, carried out region and draw
Point.
Further, 21 cross section of wire is circle, diamond shape, square, rectangle, triangle, ellipse, five
In side shape, hexagon any one or it is a variety of.
Due to above structure, wire 21 can be the cross section of any one rule or irregular shape, according to client
Needs, accounted in conjunction with cost.Common cross section is circle, convenient for supply buying.The thickness of wire 21 accounts for weld tabs
Upper matrix 11, metal layer 2 and weld tabs lower substrate 12 press 55% ~ 70% or 80% or more of thickness, the actual conditions of comprehensive client into
Row considers.
Further, 21 line style of wire be straight line, broken line or wave in any one or it is a variety of.
Due to above structure, 21 line style of wire can make be in line, in broken line or wave any one or
It is a variety of, it accounts for selecting according to comprehensive conditions such as weld tabs size, thickness, soldered bodies.
Further, when metal layer (2) is linear, wire (21) is parallel to each other；When metal layer (2) is netted,
Mesh shape be circle, diamond shape, square, rectangle, triangle, ellipse, pentagon, in hexagon any one or
Various shapes combination.
Due to above structure, choosing is comprehensively considered according to the needs of client, the material of metal layer 2, material of weld tabs matrix 1 etc.
It takes.
Further, shape can be by Mold Making at the planar chip or cambered surface piece of any regular or irregular shape.
Due to above structure, according to the concrete condition of welding surface, the shape for limiting weld tabs can be by Mold Making at any
The fitting of the planar chip or cambered surface piece and welding surface of rule or irregular shape.Common planar chip has rectangle, square, gasket
Shape, disc, annulus, frame shape etc., to meet the needs of personalized.For example curved cambered surface of cambered surface piece.
Further, the material of the weld tabs matrix 1 is tin, lead, silver, gold, copper, aluminium, zinc, indium, antimony, bismuth, cadmium, germanium material
One of or a variety of alloy materials composition；The material of the metal layer 2 be silver, copper, gold, tin, aluminium, nickel, iron, zinc, titanium, magnesium,
One or more of manganese, chromium alloy material composition.
Due to above structure, for example golden soldering piece of common weld tabs matrix 1, Au80Sn20, Au88Ge12, silver-bearing copper weld tabs,
Ag78Cu22, tin-lead weld tabs, Sn95Pb5, In97Ag3, auri solder, silver-based solder, indium-based solder, tin solder, bismuthino weldering
Material, lead-based solder etc., common metal layer such as copper mesh, copper wire, spun gold, filamentary silver and its alloy etc..
The beneficial effects of the utility model are:
1. a kind of limit weld tabs of the utility model is located at the metal layer of weld tabs intrinsic silicon, limitation fusing by being arranged
Solder toward lower flow.To guarantee that solder thickness is uniform, the reliability of welding is improved.
Detailed description of the invention
Fig. 1 is the net-shaped metal layer structure limit weld tabs schematic diagram of the utility model；
Fig. 2 is the metallic threadlike layer structure limit weld tabs schematic diagram of the utility model；
Fig. 3 is the metal-layer structure limit weld tabs schematic diagram being linked together of the utility model；
Fig. 4 is the metal-layer structure limit weld tabs schematic diagram of the dispersion of the utility model；
Fig. 5 is the limit weld tabs surface structure schematic diagram of the utility model；
In attached drawing: 1- weld tabs matrix, 2- metal layer, matrix, 12- weld tabs lower substrate, 21- wire on 11- weld tabs.
Specific embodiment
With reference to the accompanying drawing with specific embodiment, the present invention is described in more detail, but the utility model not office
It is limited to following embodiment.
Embodiment one:
A kind of limit weld tabs, including weld tabs matrix 1 and metal layer 2, the metal layer 2 are linked together (see attached drawing 3) or divide
It is set to inside weld tabs matrix 1 with dissipating (see attached drawing 4), as long as being arranged at readily flowed position, just can reach limitation solder flowing
Technical effect.Metal layer 2 selects the metal material that thermal conductivity is high, conductivity is high.In the big occasion of package area, welding surface
Larger, required weld tabs area is also larger, and when welding surface has subtle out-of-flatness, the solder of fusing can be flowed toward lower,
Cause eminence amount of solder just insufficient, solder thickness is uneven.By the way that metal layer 2 is arranged inside weld tabs matrix 1, by the weldering of flowing
Material is divided into one piece of block region, slows down the speed of overall flow after weld tabs matrix 1 melts, after solder is cooling, the solder of welding surface
Thickness keeps uniform.The thickness and size dimension of metal layer 2 are less than the thickness and size dimension of weld tabs matrix 1.Weld tabs matrix 1 can
When for integral type or discrete, when for integral type, solder can be closed by the way that solder alloy is melted into solder alloy solution
Gold solution is poured or is squeezed into mold, fixes the position of metal layer 2, is cooled and shaped, and punching press, cutting, polishing are then carried out
Etc. processes.(see attached drawing 1-4) when for discrete, the weld tabs matrix 1 includes matrix 11 and weld tabs lower substrate 12 on weld tabs, institute
State on weld tabs that matrix 11 and weld tabs lower substrate 12 are with metal layer 2 for boundary layer, matrix 11 and weld tabs lower substrate 12 are clipped on weld tabs
About 2 two sides of metal layer, calendering are integrated.The solder alloy material of needs first can be passed through into melting, be rolled into material strip shape, it will
Two panels solder alloy material strip (matrix 11 and weld tabs lower substrate 12 i.e. on weld tabs) clamps metal layer 2, will be on weld tabs by calender
Matrix 11, metal layer 2 and weld tabs lower substrate 12 press to the thickness of needs, are molded with a mold out the shape and size needed.Add
Work simple process economy is suitable for batch production, and thickness is uniform, and the size and shape of preformed soldering are controllable.Base on the weld tabs
12 size of body 11 and weld tabs lower substrate, material can it is identical, can also be different.12 phase of matrix 11 and weld tabs lower substrate on weld tabs
Together, it is only necessary to be rolled into a Seed packaged band, so that it may use in batches, it is ensured that the uniformity and production of the metallics of weld tabs matrix 1
The economy of product.
According to the concrete condition of welding surface, the shape for limiting weld tabs can be by Mold Making at any regular or irregular shape
The planar chip or cambered surface piece and welding surface of shape are bonded.Common planar chip have rectangle, square, gasket shape, disc, annulus,
Frame shape etc., to meet the needs of personalized.For example curved cambered surface of cambered surface piece.(see attached drawing 5)
The material of the weld tabs matrix 1 is one of tin, lead, silver, gold, copper, aluminium, zinc, indium, antimony, bismuth, cadmium, germanium material
Or a variety of alloy material compositions；The material of the metal layer 2 is silver, in copper, gold, tin, aluminium, nickel, iron, zinc, titanium, magnesium, manganese, chromium
One or more kinds of alloy material compositions.For example golden soldering piece of common weld tabs matrix 1, Au80Sn20, Au88Ge12, silver-bearing copper weldering
Piece, Ag78Cu22, tin-lead weld tabs, Sn95Pb5, In97Ag3, auri solder, silver-based solder, indium-based solder, tin solder, bismuth
Parent metal, lead-based solder etc., common metal layer such as copper mesh, copper wire, gold, silver and its alloy etc..
Embodiment two: for the metal layer 2 under the conditions of equal ambient, fusing point is higher than the fusing point 49 DEG C ~ 73 of weld tabs matrix 1
DEG C or 500 DEG C or more.Such as weld tabs matrix 1 be leypewter when, fusing point be 183 DEG C, metal layer 2 is 232 DEG C when being pure tin silk,
The difference of fusing point is 49 DEG C；When weld tabs matrix 1 is sn-bi alloy, fusing point is 165 DEG C, and metal layer 2 is 232 DEG C when being pure tin silk,
The difference of fusing point is 67 DEG C；When weld tabs matrix 1 is sn-bi alloy, fusing point is 159 DEG C, and metal layer 2 is 232 DEG C when being pure tin silk,
The difference of fusing point is 73 DEG C；When weld tabs matrix 1 is leypewter, fusing point is 183 DEG C, and metal layer 2 is 683 when being Pot metal
DEG C, the difference of fusing point is 500 DEG C；When weld tabs matrix 1 is sn-bi alloy, fusing point is 165 DEG C, and metal layer 2 is 1083 DEG C when being copper,
The difference of fusing point is 918 DEG C；2 fusing point of metal layer necessarily is greater than weld tabs matrix 1, can just play past when limitation weld tabs matrix 1 melts
Lower flowing.The difference of fusing point according to selected 1 material of weld tabs matrix, 2 material of metal mesh, is soldered material, processing work
The comprehensive aspect such as skill, price determines.When the difference of fusing point is smaller, 49 DEG C ~ 73 DEG C of fusing point may be selected, when the difference of fusing point is larger,
It may be selected 500 DEG C or more.
Embodiment three: the metal layer 2 is made of several sheet metals, or by several 21 threadiness of wire (see attached drawing
2) or net distribution constitutes (see attached drawing 1).Metal layer 2 will be divided into one piece in weld tabs matrix 1 by sheet metal or wire 21
Block region.Wire 21 can be regard as a rule line, carry out region division, wire 21 can also woven and be reticulated, into
Row region division.21 cross section of wire can be the cross section of any one rule or irregular shape, according to the need of client
It wants, is accounted in conjunction with cost.It may be, for example, circle, diamond shape, square, rectangle, triangle, ellipse, pentagon, six sides
In shape any one or it is a variety of.Common cross section is circle, convenient for supply buying.The thickness of wire 21 accounts on weld tabs
Matrix 11, metal layer 2 and weld tabs lower substrate 12 press 55% ~ 70% or 80% or more of thickness, and the actual conditions of comprehensive client carry out
Consider.21 line style of wire can in straight line, broken line or wave any one or it is a variety of.According to weld tabs size,
The comprehensive conditions such as thickness, soldered body account for selecting.The metal layer 2 of the threadiness, wire 21 can be parallel to each other；Institute
The mesh shape for stating netted metal layer 2 can be circle, diamond shape, square, rectangle, triangle, ellipse, pentagon, six
Any one in the shape of side or various shapes combination.According to the needs of client, the material of metal layer 2, the material of weld tabs matrix 1
It is chosen etc. comprehensively considering.
In conclusion the utility model proposes a kind of limit weld tabs, by be arranged be located at weld tabs intrinsic silicon metal
Layer, the solder for limiting fusing are flowed toward lower.To guarantee that solder thickness is uniform, the reliability of welding is improved.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of limit weld tabs, which is characterized in that including weld tabs matrix (1) and metal layer (2), the metal layer (2) is linked as one
Body is dispersedly set to weld tabs matrix (1) inside, and the metal layer (2) can limit when weld tabs matrix (1) is melted toward lower stream
It is dynamic.
2. a kind of limit weld tabs according to claim 1, it is characterised in that: the weld tabs matrix (1) includes base on weld tabs
Body (11) and weld tabs lower substrate (12), on the weld tabs matrix (11) and weld tabs lower substrate (12) with metal layer (2) for boundary layer,
Calendering is integrated.
3. a kind of limit weld tabs according to claim 2, it is characterised in that: base under matrix (11) and weld tabs on the weld tabs
Body (12) size, material are all the same.
4. a kind of limit weld tabs described in one of -3 according to claim 1, it is characterised in that: the metal layer (2) is in same ring
Under the conditions of border, fusing point is higher than 49 DEG C ~ 73 DEG C or 500 DEG C of fusing point or more of weld tabs matrix (1).
5. a kind of limit weld tabs described in one of -3 according to claim 1, it is characterised in that: the metal layer (2) is by several
Sheet metal is constituted, or is made of several wires (21) threadiness or net distribution.
6. a kind of limit weld tabs according to claim 5, it is characterised in that: wire (21) cross section be it is round,
Diamond shape, square, rectangle, triangle, ellipse, pentagon, in hexagon any one or it is a variety of.
7. a kind of limit weld tabs according to claim 5, it is characterised in that: wire (21) line style is straight line, folding
In line or wave any one or it is a variety of.
8. a kind of limit weld tabs according to claim 5, it is characterised in that: when metal layer (2) is linear, wire
(21) it is parallel to each other；When metal layer (2) is netted, mesh shape is circle, diamond shape, square, rectangle, triangle, ellipse
Circle, pentagon, any one or various shapes combination in hexagon.
9. a kind of limit weld tabs according to claim 5, it is characterised in that: its shape can be by Mold Making at any rule
Then or the planar chip of irregular shape or cambered surface piece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821184129.2U CN209078071U (en) | 2018-07-25 | 2018-07-25 | A kind of limit weld tabs |
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| CN201821184129.2U CN209078071U (en) | 2018-07-25 | 2018-07-25 | A kind of limit weld tabs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055041A (en) * | 2020-01-09 | 2020-04-24 | 郑州机械研究所有限公司 | Composite brazing filler metal, preparation method and application thereof, and welding part |
| CN111097987A (en) * | 2020-01-13 | 2020-05-05 | 深圳市晟达真空钎焊技术有限公司 | Vacuum brazing structure of liquid cooling plate with micro-channel |
| CN117066752A (en) * | 2023-10-18 | 2023-11-17 | 广州汉源微电子封装材料有限公司 | Height-limiting preformed soldering lug with high stability and high reliability and preparation method thereof |
| WO2024152713A1 (en) * | 2023-01-17 | 2024-07-25 | 广州汉源微电子封装材料有限公司 | Composite soldering terminal and manufacturing method therefor |
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2018
- 2018-07-25 CN CN201821184129.2U patent/CN209078071U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055041A (en) * | 2020-01-09 | 2020-04-24 | 郑州机械研究所有限公司 | Composite brazing filler metal, preparation method and application thereof, and welding part |
| CN111097987A (en) * | 2020-01-13 | 2020-05-05 | 深圳市晟达真空钎焊技术有限公司 | Vacuum brazing structure of liquid cooling plate with micro-channel |
| WO2024152713A1 (en) * | 2023-01-17 | 2024-07-25 | 广州汉源微电子封装材料有限公司 | Composite soldering terminal and manufacturing method therefor |
| CN117066752A (en) * | 2023-10-18 | 2023-11-17 | 广州汉源微电子封装材料有限公司 | Height-limiting preformed soldering lug with high stability and high reliability and preparation method thereof |
| CN117066752B (en) * | 2023-10-18 | 2023-12-19 | 广州汉源微电子封装材料有限公司 | Height-limiting preformed soldering lug with high stability and high reliability and preparation method thereof |
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