CN206272969U - A kind of welding resistance consent general air guide backing plate of printed substrate - Google Patents
A kind of welding resistance consent general air guide backing plate of printed substrate Download PDFInfo
- Publication number
- CN206272969U CN206272969U CN201621373885.0U CN201621373885U CN206272969U CN 206272969 U CN206272969 U CN 206272969U CN 201621373885 U CN201621373885 U CN 201621373885U CN 206272969 U CN206272969 U CN 206272969U
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- Prior art keywords
- air guide
- backing plate
- printed substrate
- welding resistance
- consent
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Abstract
The utility model is related to a kind of general air guide backing plate of the welding resistance consent of printed substrate, it includes epoxy core plate, BGA porose area is drilled with the epoxy core plate, the BGA porose area includes macropore and aperture, a diameter of 3.0mm of the macropore, a diameter of 1.0mm of the aperture, the aperture is the complementary apertures in the middle of adjacent 4 macropores.Air guide backing plate of the present utility model has versatility, by increasing capacitance it is possible to increase wiring board welding resistance consent plumpness, improves the quality and producing efficiency of consent.
Description
Technical field
The utility model is related to printed substrate to make field, more particularly to a kind of welding resistance consent of printed substrate is general
Air guide backing plate.
Background technology
Conductive hole (Via hole) in printed substrate can play a part of circuit and interlink conducting.With electronics
Product develops to " light, thin, short, small " direction, and printed substrate surface-assembled occurs also to high density, highly difficult development
Technology (SMT), welded ball array encapsulation technology (BGA), this proposes requirement higher, conductive stopple to printed substrate manufacture craft
Hole technique is arisen at the historic moment.Conductive hole consent mainly has five effects：
1) tin causes short circuit from via through component side when preventing printed substrate from crossing wave-soldering；
2) welding assisted agent residuals are avoided in via；
3) printed substrate will inhale vacuum on a testing machine after the completion of Electronics Factory's surface mount and element are assembled has foot
Enough negative pressure；
4) prevent from causing rosin joint in the tin cream ostium of surface, influence attachment；
5) tin sweat(ing) was ejected when preventing wave-soldering, caused short circuit.
For surface mounting board, especially welded ball array encapsulation and the attachment of integrated circuit, also require that conductive hole consent must
Must be smooth.
At present, the mode of welding resistance consent is broadly divided into even two kinds of print band plug and aluminium flake consent.During using even print band plug mode,
Ink is not full in hole, and it is rubescent aperture easily occur, and large quantity of air can be deposited in hole, and air expansion can break through welding resistance during solidification
Film, causes cavity, a small amount of via is had during hot air leveling and hides tin, can not meet high-end customer quality requirements.Using aluminium flake plug
, it is necessary to be aided in using air guide backing plate during the mode of hole, air in hole is smoothly discharged during consent, satisfy so as to reach consent
Full effect.Traditional air guide backing plate is the special backing plate corresponding with printed substrate model, is together bored with aluminium flake when using
Go out, different printing wiring board model needs the air guide backing plate of different model, cause printed substrate cost of manufacture to increase, production effect
Rate is relatively low.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of the logical of replacement conventional dedicated air guide backing plate
Air guide backing plate is used, cost of manufacture is saved while identical consent effect is played, consent efficiency is improved.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of general air guide backing plate of welding resistance consent of printed substrate is provided, it includes epoxy core plate, the epoxy core plate
On be drilled with BGA porose area, the BGA porose area includes macropore and aperture, and a diameter of 3.0mm of the macropore is described
A diameter of 1.0mm of aperture, the aperture is the complementary apertures in the middle of adjacent 4 macropores.
Preferably, the size of the epoxy core plate is 700mm × 800mm.
Preferably, the thickness of the epoxy core plate is 2mm.
Preferably, the scope of the BGA porose area is 550mm × 650mm.The size in the BGA area is upper
State the consent making that scope interior energy meets conventional maximum wiring board jigsaw size 540 × 625mm plates.
Preferably, the hole back gauge of the BGA porose area is 0.5mm.
The beneficial effects of the utility model are：By such scheme, special air guide backing plate is replaced using general air guide backing plate,
Identical consent effect can be played, the efficiency that cost of manufacture improves consent is saved.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the general air guide backing plate of welding resistance consent of printed substrate of the utility model.
Fig. 2 is the zoomed-in view of Blocked portion in Fig. 1.
Specific embodiment
The utility model is further illustrated with reference to Figure of description and specific embodiment：
A kind of general air guide backing plate of welding resistance consent of printed substrate as shown in Figure 1-2, it includes epoxy core plate 1, institute
State and BGA porose area 2 is drilled with epoxy core plate 1, the BGA porose area 2 includes macropore 3 and aperture 4, the macropore 3
A diameter of 3.0mm, a diameter of 1.0mm of the aperture 4, the aperture 4 are the complementary apertures in the middle of adjacent 4 macropores 3.The ring
The size of oxygen core plate 1 is 700mm × 800mm.The thickness of the epoxy core plate 1 is 2mm.The scope of the BGA porose area 2
It is 550mm × 650mm.The size in the BGA area 2 can meet conventional maximum wiring board jigsaw size within the above range
The consent of 540 × 625mm plates makes.The hole back gauge of the BGA porose area 2 is 0.5mm.
The utility model provides a kind of general air guide backing plate of welding resistance consent of printed substrate, mainly substitutes special plug
Hole air guide backing plate, the welding resistance consent for wiring board makes, and the general air guide base plate of plug hole of the printed substrate can be with venting
Air in consent conductive hole, while ensureing uniform force during ink plugging, consent is full, is not in existing depression and cavity
As improve the efficiency of consent.
Above content is to combine the step detailed description that specific preferred embodiment is made to the utility model, it is impossible to recognized
Fixed specific implementation of the present utility model is confined to these explanations.For the ordinary skill people of the utility model art
For member, without departing from the concept of the premise utility, some simple deduction or replace can also be made should all work as and regard
Originally belong to the protection domain of utility model to belong to.
Claims (5)
1. the general air guide backing plate of the welding resistance consent of a kind of printed substrate, it is characterised in that：Including epoxy core plate (1), the ring
BGA porose area (2) is drilled with oxygen core plate (1), the BGA porose area (2) includes macropore (3) and aperture (4), described big
A diameter of 3.0mm in hole (3), a diameter of 1.0mm of the aperture (4), the aperture (4) is provided in adjacent 4 macropores (3)
Middle complementary apertures.
2. the general air guide backing plate of the welding resistance consent of a kind of printed substrate according to claim 1, it is characterised in that：It is described
Epoxy core plate (1) size is 700mm × 800mm.
3. the general air guide backing plate of the welding resistance consent of a kind of printed substrate according to claim 1, it is characterised in that：It is described
The thickness of epoxy core plate (1) is 2mm.
4. a kind of general air guide backing plate of the welding resistance consent of the printed substrate according to claim any one of 1-3, its feature
It is：The scope of the BGA porose area (2) is 550mm × 650mm.
5. a kind of general air guide backing plate of the welding resistance consent of the printed substrate according to claim any one of 1-3, its feature
It is：The hole back gauge of the BGA porose area (2) is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373885.0U CN206272969U (en) | 2016-12-14 | 2016-12-14 | A kind of welding resistance consent general air guide backing plate of printed substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373885.0U CN206272969U (en) | 2016-12-14 | 2016-12-14 | A kind of welding resistance consent general air guide backing plate of printed substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272969U true CN206272969U (en) | 2017-06-20 |
Family
ID=59046319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621373885.0U Active CN206272969U (en) | 2016-12-14 | 2016-12-14 | A kind of welding resistance consent general air guide backing plate of printed substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206272969U (en) |
-
2016
- 2016-12-14 CN CN201621373885.0U patent/CN206272969U/en active Active
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