CN204361084U - A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy - Google Patents
A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy Download PDFInfo
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- CN204361084U CN204361084U CN201420807706.4U CN201420807706U CN204361084U CN 204361084 U CN204361084 U CN 204361084U CN 201420807706 U CN201420807706 U CN 201420807706U CN 204361084 U CN204361084 U CN 204361084U
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- pin
- lead frame
- permanent deformation
- fracture energy
- opposing permanent
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Abstract
The utility model relates to a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy, it comprises multiple lead frame unit (1), each lead frame unit (1) comprises multiple pin array (2), be connected by middle muscle (3) between the pin array (2) of adjacent two lead frame unit (1), described pin array (2) comprises long pin (2.1) and short pin (2.2), described middle muscle (3) is provided with a horizontal rib (5) and many lengthways of rod (4), described many lengthways of rod (4) are connected between the long pin (2.1) of adjacent two pin array (2).A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy of the utility model, it effectively can strengthen the intensity of long tube pin, strengthen opposing permanent deformation and fracture energy, and reduce tool loss and the appearance forming layer structure defect, unnecessary operation need not be increased.
Description
Technical field
The utility model relates to a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy, belongs to technical field of semiconductor encapsulation.
Background technology
Square flat pinless is encapsulated as one of surface mount packages, and without pin, in square or rectangle, package bottom middle position has one or more exposed pads to be used for heat conduction, encapsulates four sides and is configured with electrode contacts.When there being the pin of longer half-etched regions, its undercapacity, current means increase pin entity part (see Fig. 1).Existing project organization can not effectively be gained in strength, and its technical pattern can cause the making tool loss of encapsulation serious, and forms layer structure defect.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy is provided, it effectively can strengthen the intensity of long tube pin, strengthen opposing permanent deformation and fracture energy, and reduce tool loss and the appearance forming layer structure defect, unnecessary operation need not be increased.
The purpose of this utility model is achieved in that a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy, it comprises multiple lead frame unit, each lead frame unit comprises multiple pin array, be connected by middle muscle between the pin array of adjacent two lead frame unit, described pin array comprises long pin and short pin, described middle muscle is provided with a horizontal rib and many lengthways of rod, described many lengthways of rod and horizontal rib perpendicular, described many lengthways of rod are connected between the long pin of adjacent two pin array.
Described lengthways of rod width is 20% ~ 40% of single pin width.
The width of described horizontal rib is 10% ~ 30% of middle muscle width, and described horizontal rib length and long pin array width add 1 ~ 2 times of single pin width.
Described long pin comprises metal solid part and half-etching part.
Described short pin is metal solid structure.
Described middle muscle is metal half-etching structure.
Described lengthways of rod and horizontal rib are metal solid structure.
Compared with prior art, the utility model has following beneficial effect:
A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy of the utility model, it effectively can strengthen the intensity of long tube pin, strengthen opposing permanent deformation and fracture energy, and reduce tool loss and the appearance forming layer structure defect, unnecessary operation need not be increased.
Accompanying drawing explanation
fig. 1 is the structural representation of existing lead frame.
Fig. 2 is a kind of schematic diagram strengthening the lead frame structure of pin opposing permanent deformation and fracture energy of the utility model.
Wherein:
Lead frame unit 1
Pin array 2
Long pin 2.1
Short pin 2.2
Middle muscle 3
Lengthways of rod 4
Horizontal rib 5.
Embodiment
See Fig. 2, a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy of the utility model, it comprises multiple lead frame unit 1, each lead frame unit 1 comprises multiple pin array 2, be connected by middle muscle 3 between the pin array 2 of adjacent two lead frame unit 1, described pin array 2 comprises long pin 2.1 and short pin 2.2, described middle muscle 3 is provided with a horizontal rib 5 and many lengthways of rod 4, described many lengthways of rod 4 are perpendicular with horizontal rib 5, described many lengthways of rod 4 are connected between the long pin 2.1 of adjacent two pin array 2.
Described lengthways of rod 4 width is 20% ~ 40% of single pin width.
The width of described horizontal rib 5 is 10% ~ 30% of middle muscle width, and described horizontal rib 5 length and long pin array width add 1 ~ 2 times of single pin width.
Described long pin 2.1 comprises metal solid part and half-etching part.
Described short pin 2.2 is metal solid structure.
Described middle muscle 3 is metal half-etching structure.
Described lengthways of rod 4 and horizontal rib 5 are metal solid structure.
Claims (8)
1. one kind strengthens the lead frame structure of pin opposing permanent deformation and fracture energy, it is characterized in that: it comprises multiple lead frame unit (1), each lead frame unit (1) comprises multiple pin array (2), be connected by middle muscle (3) between the pin array (2) of adjacent two lead frame unit (1), described pin array (2) comprises long pin (2.1) and short pin (2.2), described middle muscle (3) is provided with a horizontal rib (5) and many lengthways of rod (4), described many lengthways of rod (4) are perpendicular with horizontal rib (5), described many lengthways of rod (4) are connected between the long pin (2.1) of adjacent two pin array (2).
2. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1, is characterized in that: described lengthways of rod (4) width is 20% ~ 40% of single pin width.
3. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1 and 2, is characterized in that: the width of described horizontal rib (5) is 10% ~ 30% of middle muscle width.
4. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 3, is characterized in that: described horizontal rib (5) length and long pin array width add 1 ~ 2 times of single pin width.
5. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1, is characterized in that: described long pin (2.1) comprises metal solid part and half-etching part.
6. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1, is characterized in that: described short pin (2.2) is metal solid structure.
7. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1, is characterized in that: described middle muscle (3) is metal half-etching structure.
8. a kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy according to claim 1, is characterized in that: described lengthways of rod (4) and horizontal rib (5) are metal solid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807706.4U CN204361084U (en) | 2014-12-19 | 2014-12-19 | A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807706.4U CN204361084U (en) | 2014-12-19 | 2014-12-19 | A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361084U true CN204361084U (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420807706.4U Active CN204361084U (en) | 2014-12-19 | 2014-12-19 | A kind of lead frame structure strengthening pin opposing permanent deformation and fracture energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204361084U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994108A (en) * | 2017-12-26 | 2018-05-04 | 深圳市灏天光电有限公司 | A kind of anti-fracture stent and its production method |
| CN110148586A (en) * | 2019-05-16 | 2019-08-20 | 宁波港波电子有限公司 | A kind of composite lead frame and its manufacturing method |
-
2014
- 2014-12-19 CN CN201420807706.4U patent/CN204361084U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994108A (en) * | 2017-12-26 | 2018-05-04 | 深圳市灏天光电有限公司 | A kind of anti-fracture stent and its production method |
| CN110148586A (en) * | 2019-05-16 | 2019-08-20 | 宁波港波电子有限公司 | A kind of composite lead frame and its manufacturing method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |