CN206210785U - A kind of rejection shape lead frame group of 251 types of TO four - Google Patents
A kind of rejection shape lead frame group of 251 types of TO four Download PDFInfo
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- CN206210785U CN206210785U CN201621034080.3U CN201621034080U CN206210785U CN 206210785 U CN206210785 U CN 206210785U CN 201621034080 U CN201621034080 U CN 201621034080U CN 206210785 U CN206210785 U CN 206210785U
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- muscle
- lead frame
- heat sink
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Abstract
The utility model belongs to IC manufacturing field,More particularly to a kind of rejection of 251 types of TO four shape lead frame group,Including several lead frames and muscle,The lead frame includes heat sink and the terminal pin being connected with the heat sink,The thickness of the heat sink is 0.8mm,The thickness of the terminal pin is 0.5mm,The muscle includes the top muscle being arranged at the top of the heat sink and the bottom muscle for being arranged on the lead foot bottom,Two lead frames are connected together to two row's structures by the top muscle,Two two rows structures are connected together to four row's structures by the bottom muscle,The utility model increases to 0.8mm by by the thickness of heat sink,Improve the thermal capacity of heat sink,Improve its heat dispersion,And preferably slow down the release of stress,Improve the intensity of heat sink,It is not easily broken,And single lead frame is symmetrically connected by muscle,Form one group of four structure of row,Increased the quantity of lead frame in single group,Improve production and processing efficiency.
Description
Technical field
The utility model belongs to IC manufacturing field, more particularly to a kind of TO-251 types four rejection shape lead frame
Group.
Background technology
Lead frame is a kind of carrier of IC chip, is to make chip internal circuits exit (key by bonding wire
Chalaza) electrical connection with outer lead is realized by lead, form the key structure part of electric loop.In the semiconductors, draw
Wire frame mainly plays firm chip, conducted signal, transmission heat, it is necessary in intensity, bending, electric conductivity, thermal conductivity, resistance to
The aspect such as hot, thermally matched, corrosion-resistant, stepping, coplanarity, Stress Release reaches standard higher.
The model of lead frame has various, wherein, the application of TO-251 type lead frames is widely.Traditional TO-251
Type lead frame includes heat sink and terminal pin, and chip is arranged on heat sink, and heat sink and terminal pin are the copper of 0.5mm
Band, in use, the programming rate of heat sink is higher, and thermal capacity is again relatively limited, can not function well as radiating
Effect, if product intensification is too high, easily burns out wiring board.In addition, traditional TO-251 type lead frame groups, are single row configuration,
In process of production, two row lead frame groups may only be put into a diaphragm capsule, production efficiency is relatively low.
In view of above-mentioned defect, the design people is actively subject to research and innovation, to found a kind of rejection of TO-251 types four
Shape lead frame group, makes it have more the value in industry.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of rejection of TO-251 types four shape lead frame
Group, the thermal capacity of its heat sink is higher, perfect heat-dissipating, not easy burn-out wiring board, can slow down the release of stress, and intensity is high,
It is not easily broken, and single lead frame is symmetrically connected by muscle, form one group of four structure of row, increased lead in single group
The quantity of framework, improves production and processing efficiency.
The utility model proposes a kind of TO-251 types four reject shape lead frame group, including several lead frames and
Muscle, the lead frame includes heat sink and the terminal pin being connected with the heat sink, and the thickness of the heat sink is 0.8mm,
The thickness of the terminal pin is 0.5mm, and the muscle includes the top muscle being arranged at the top of the heat sink and is arranged on the lead
The bottom muscle of foot bottom, two lead frames are connected together to two row's structures, two two rows structures by the top muscle
Four row's structures are connected together to by the bottom muscle.
Further, the quantity of the terminal pin is 3, including middle pin and the side for being separately positioned on the middle pin both sides
Pin, the batter is provided with weldering nip.
Further, the size of two weldering nips is different.
Further, the muscle includes connecting the middle muscle of the middle pin and the batter.
Further, the material of the lead frame and muscle is copper.
Further, the bottom muscle is provided with location hole.
Further, the heat sink is provided with louvre.
By such scheme, the utility model at least has advantages below：The utility model is by by the thickness of heat sink
0.8mm is increased to, the thermal capacity of heat sink is improve, its heat dispersion is improved, and preferably slow down the release of stress, carried
The intensity of heat sink high, is not easily broken, and single lead frame is symmetrically connected by muscle, one group of four knot of row of formation
Structure, increased the quantity of lead frame in single group, improve production and processing efficiency.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is partial structural diagram of the present utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
Referring to Fig. 1,1 group of a kind of TO-251 types four rejection shape lead frame described in the preferred embodiment of the utility model one,
Including several lead frames 1 and muscle 2.Lead frame 1 includes heat sink 11 and the terminal pin 12 being connected with heat sink 11, radiating
The thickness of plate 11 is 0.8mm, and the thickness of terminal pin 12 is 0.5mm, and the quantity of terminal pin 12 is 3, including middle pin 121 and difference
The batter 122 of the both sides of middle pin 121 is arranged on, batter 122 is provided with weldering nip 13, and the size of two weldering nips 13 is different,
Muscle 2 includes being arranged on the top muscle 21 at the top of heat sink 11, be arranged on the bottom muscle 22 of the bottom of terminal pin 12 and connect in the and of pin 121
The middle muscle 23 of batter 122.
In 1 group of lead frame, two lead frames 1 are connected together to two row's structures, two two row's structures by pushing up muscle 21
Four row's structures are connected together to by bottom muscle 22, several four rows structures are connected by bottom muscle 22, side-by-side series form lead frame
1 group of frame.In addition, the material of lead frame 1 and muscle 2 is copper, bottom muscle 22 is provided with location hole 3, and heat sink 11 is provided with louvre
4。
In sum, the utility model increases to 0.8mm by by the thickness of heat sink 11, improves the heat of heat sink 11
Capacity, improves its heat dispersion, and preferably slow down the release of stress, improves the intensity of heat sink 11, is not easily broken,
And single lead frame 1 is symmetrically connected by muscle 2, one group of four structure of row is formed, lead frame 1 in single group is increased
Quantity, improves production and processing efficiency.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that
For those skilled in the art, on the premise of the utility model know-why is not departed from, can also do
Go out some improvement and modification, these are improved and modification also should be regarded as protection domain of the present utility model.
Claims (7)
1. a kind of TO-251 types four rejection shape lead frame group, it is characterised in that：It is described to draw including several lead frames and muscle
Wire frame includes heat sink and the terminal pin being connected with the heat sink, and the thickness of the heat sink is 0.8mm, the terminal pin
Thickness be 0.5mm, the muscle includes being arranged on top muscle at the top of the heat sink and is arranged on the bottom of the lead foot bottom
Muscle, two lead frames are connected together to two row's structures by the top muscle, and two two rows structures pass through the bottom
Muscle is connected together to four row's structures.
2. TO-251 types four according to claim 1 rejection shape lead frame group, it is characterised in that：The number of the terminal pin
It is 3 to measure, including middle pin and the batter for being separately positioned on the middle pin both sides, and the batter is provided with weldering nip.
3. TO-251 types four according to claim 2 rejection shape lead frame group, it is characterised in that：Two weldering nips
Size it is different.
4. TO-251 types four according to claim 2 rejection shape lead frame group, it is characterised in that：The muscle includes connection
The middle muscle of the middle pin and the batter.
5. TO-251 types four according to claim 1 rejection shape lead frame group, it is characterised in that：The lead frame and
The material of muscle is copper.
6. TO-251 types four according to claim 1 rejection shape lead frame group, it is characterised in that：The bottom muscle is provided with
Location hole.
7. TO-251 types four according to claim 1 rejection shape lead frame group, it is characterised in that：Set on the heat sink
There is louvre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034080.3U CN206210785U (en) | 2016-08-31 | 2016-08-31 | A kind of rejection shape lead frame group of 251 types of TO four |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034080.3U CN206210785U (en) | 2016-08-31 | 2016-08-31 | A kind of rejection shape lead frame group of 251 types of TO four |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206210785U true CN206210785U (en) | 2017-05-31 |
Family
ID=58759524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621034080.3U Active CN206210785U (en) | 2016-08-31 | 2016-08-31 | A kind of rejection shape lead frame group of 251 types of TO four |
Country Status (1)
| Country | Link |
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| CN (1) | CN206210785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158812A (en) * | 2016-08-31 | 2016-11-23 | 无锡罗姆半导体科技有限公司 | A kind of TO 251 type four rejects shape lead frame group |
-
2016
- 2016-08-31 CN CN201621034080.3U patent/CN206210785U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158812A (en) * | 2016-08-31 | 2016-11-23 | 无锡罗姆半导体科技有限公司 | A kind of TO 251 type four rejects shape lead frame group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A TO-251 type four row shaped lead frame group Effective date of registration: 20180131 Granted publication date: 20170531 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Roum Semiconductor Technology Co., Ltd. Registration number: 2018990000073 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 222300 No. 88 Shuofang Zhongtong East Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Jiangsu Donghai Semiconductor Technology Co., Ltd. Address before: 214000 No. 88 Shuofang Zhongtong East Road, Wuxi New District, Jiangsu Province Patentee before: Wuxi Roum Semiconductor Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 222300 No. 88 Shuofang Zhongtong East Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Jiangsu Donghai Semiconductor Co.,Ltd. Address before: 222300 No. 88 Shuofang Zhongtong East Road, Xinwu District, Wuxi City, Jiangsu Province Patentee before: WUXI ROUM SEMICONDUCTOR TECHNOLOGY Co.,Ltd. |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220322 Granted publication date: 20170531 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi science and Technology Branch Pledgor: WUXI ROUM SEMICONDUCTOR TECHNOLOGY Co.,Ltd. Registration number: 2018990000073 |