CN209151420U - Printed circuit board - Google Patents
Printed circuit board Download PDFInfo
- Publication number
- CN209151420U CN209151420U CN201821547627.9U CN201821547627U CN209151420U CN 209151420 U CN209151420 U CN 209151420U CN 201821547627 U CN201821547627 U CN 201821547627U CN 209151420 U CN209151420 U CN 209151420U
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- Prior art keywords
- ring
- pad
- circuit board
- weld
- printed circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The utility model relates to circuit board technology fields, especially a kind of printed circuit board for high current socket, it includes substrate, pad is provided on the substrate, the pad includes round weld-ring, and the centre of the circle weld-ring is provided with pin connecting hole, and the pad further includes 6-10 root bead condition, all welding rods part connects the outside that round weld-ring is arranged in, and all welding rods part is put down and is arranged in the circumferential direction of round weld-ring.It that is to say and increase welding rod part of the 6-10 root to external radiation on the basis of round weld-ring, the entire area of pad is increased, the intensity of pad is improved, and the stress that unit area is born reduces, pass through obtaining in a large number of experiments and practice, when in the environment of high/low temperature, thermal shock and high temperature and humidity, pad integrality is good, reduces the probability of pad crackle, bubble, significantly improve product use reliability and service life, moreover, the printed circuit board structure of the utility model is simple, it is conducive to promote.
Description
Technical field
The utility model relates to circuit board technology field, especially a kind of printed circuit board for high current socket.
Background technique
Currently, printed circuit board is provided in high current socket, since the pad on the substrate of printed circuit board only has one
Layer circular pad, make printed circuit board in the environment of high/low temperature, thermal shock or high temperature and humidity when, pad, which is likely to occur, to be split
The problems such as line, bubble, the service performance and service life of printed circuit board are seriously affected, product use reliability is low.
Utility model content
The printing that the technical problem to be solved by the utility model is to provide a kind of structures simply, product use reliability is high
Circuit board.
The utility model solves printed circuit board used by its technical problem, including substrate, is provided on the substrate
Pad, the pad include round weld-ring, and the centre of the circle weld-ring is provided with pin connecting hole, and the pad further includes 6-
10 root bead conditions, all welding rods part connects the outside that round weld-ring is arranged in, and all welding rods part puts down and is arranged at round weld-ring
Circumferential direction on.
Further, the pin connecting hole is located at the middle of round weld-ring.
Further, the diameter of the circle weld-ring is between 2.8-3.2mm.
Further, the pad includes 8 root bead conditions.
Further, the shape of all welding rods part, size are identical, the shape of welding rod part is rectangle, every root bead condition
Length be 1.2mm, width 0.8-1.0mm.
Further, the outside of round weld-ring is arranged in by scolding tin connection for all welding rods part.
Further, the outer end of every root bead condition is arc-shaped.
The beneficial effects of the utility model are: the pad of the utility model is made of round weld-ring and 6-10 root bead condition,
All welding rods part is flat to be arranged in the circumferential direction of round weld-ring, that is to say that 6-10 root is increased on the basis of round weld-ring is outside
The welding rod part of radiation increases the entire area of pad, and the intensity of pad is improved, and the stress that unit area is born reduces,
By obtaining in a large number of experiments and practice, when in the environment of high/low temperature, thermal shock or high temperature and humidity, pad integrality is good,
The probability for reducing pad crackle, bubble significantly improves product use reliability and service life, moreover, the utility model
Printed circuit board structure it is simple, be conducive to promote.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Components, position and number in figure: substrate 1, round weld-ring 2, welding rod part 3, pin connecting hole 4.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, the utility model printed circuit board, including substrate 1, pad, the weldering are provided on the substrate 1
Disk includes round weld-ring 2, and the centre of the circle weld-ring 2 is provided with pin connecting hole 4, and the pad further includes 6-10 electrode
The outside of round weld-ring 2 is arranged in by scolding tin connection in part 3, all welding rods part 3, and all welding rods part 3 is flat is arranged at circle
In the circumferential direction of weld-ring 2.
The pad of the utility model is made of round weld-ring 2 and 6-10 root bead condition 3, and the shape of welding rod part 3 is rectangle,
In the flat circumferential direction for being arranged at round weld-ring 2 of all welding rods part 3, it that is to say and increase 6-10 root on the basis of round weld-ring 2
To the welding rod part 3 of external radiation, the entire area of pad is increased, the intensity of pad is improved, the stress that unit area is born
It reduces, by obtaining in a large number of experiments and practice, when in the environment of high/low temperature, thermal shock or high temperature and humidity, pad is complete
Whole property is good, reduces the probability of pad crackle, bubble, product use reliability and service life is significantly improved, moreover, this reality
It is simple with novel printed circuit board structure, it is conducive to promote.
Specifically, the quantity of welding rod part 3 is preferably 8, and 8 root bead conditions 3 are flat by obtaining in a large number of experiments and practice
It being distributed in the circumferential direction of round weld-ring 2, when using 8 root bead condition 3, the stress that the unit area of welding rod part 3 is born is smaller, at
This is relatively low.
In order to which the stress for bearing pad is uniform, the pin connecting hole 4 is located at the middle of round weld-ring 2.Weld-ring
Area is calculated according to P=F/S and is determined, P: it indicates pressure F: indicating pressure S: indicating forced area, for the ease of processing and assembling,
The diameter of circular weld-ring 2 is between 2.8-3.2mm.Stress in order to further bear pad more evenly also facilitates
Processing, shape, the size of all welding rods part 3 are identical, and the shape of welding rod part 3 is rectangle, and the length of every root bead condition 3 is
1.2mm, width 0.8-1.0mm.The shape of welding rod part 3 is rectangle, and in order to further facilitate processing, stress occurs in reduction
The risk of concentration, the outer end of every root bead condition 3 are arc-shaped.
Claims (7)
1. printed circuit board, including substrate (1), pad is provided on the substrate (1), the pad includes round weld-ring (2),
The centre of the circle weld-ring (2) is provided with pin connecting hole (4), it is characterised in that: the pad further includes 6-10 electrode
Part (3), all welding rods part (3) connection setting is in the outside of round weld-ring (2), and all welding rods part (3) puts down and is arranged at circle
In the circumferential direction of weld-ring (2).
2. printed circuit board as described in claim 1, it is characterised in that: the pin connecting hole (4) is located at round weld-ring (2)
Middle.
3. printed circuit board as described in claim 1, it is characterised in that: the diameter of the circle weld-ring (2) is in 2.8-3.2mm
Between.
4. printed circuit board as described in claim 1, it is characterised in that: the pad includes 8 root bead conditions (3).
5. the printed circuit board as described in Claims 1-4 any one, it is characterised in that: the shape of all welding rods part (3),
Size is identical, and the shape of welding rod part (3) is rectangle, and the length of every root bead condition (3) is 1.2mm, width 0.8-1.0mm.
6. printed circuit board as claimed in claim 5, it is characterised in that: all welding rods part (3) is existed by scolding tin connection setting
The outside of round weld-ring (2).
7. printed circuit board as claimed in claim 5, it is characterised in that: the outer end of every root bead condition (3) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547627.9U CN209151420U (en) | 2018-09-20 | 2018-09-20 | Printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547627.9U CN209151420U (en) | 2018-09-20 | 2018-09-20 | Printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209151420U true CN209151420U (en) | 2019-07-23 |
Family
ID=67267936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821547627.9U Active CN209151420U (en) | 2018-09-20 | 2018-09-20 | Printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209151420U (en) |
-
2018
- 2018-09-20 CN CN201821547627.9U patent/CN209151420U/en active Active
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| GR01 | Patent grant |