CN203850289U - Plastic-sealed lead frame for low-power electrical appliances - Google Patents
Plastic-sealed lead frame for low-power electrical appliances Download PDFInfo
- Publication number
- CN203850289U CN203850289U CN201420145074.XU CN201420145074U CN203850289U CN 203850289 U CN203850289 U CN 203850289U CN 201420145074 U CN201420145074 U CN 201420145074U CN 203850289 U CN203850289 U CN 203850289U
- Authority
- CN
- China
- Prior art keywords
- lead frame
- lead
- terminal pin
- plastic
- plastic packaging
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a plastic-sealed lead frame for low-power electrical appliances, which is composed of a plurality of lead frame units in one row. The lead frame units are interconnected through a connecting rib. Each lead frame unit comprises a heat radiating fin and lead legs. The connecting parts between the heat radiating fin and the lead legs are bent. The distance between the plane of the heat radiating fin and the plane of the lead legs is 1.27+/-0.02mm. Each lead leg is provided with a bonding area. The precise pressing depth of the bonding area is 0.02-0.04mm. Requirement for precise pressing depth of the bonding area of the lead legs at two sides of the frame is relatively high. The lead legs are symmetrical in the horizontal direction. Machining difficulty coefficient increases, but high added value is realized. The plastic-sealed lead frame can be widely used in low-power high-precision electrical appliances and performs an important function.
Description
Technical field
The utility model relates to a kind of plastic packaging lead frame.
Background technology
Plastic packaging lead frame is as the chip carrier of integrated circuit, it is a kind of electrical connection that realizes chip internal circuit exit and outer lead by means of bonding material (spun gold, aluminium wire, copper wire), form the key structure part of electric loop, it has played the function served as bridge being connected with outer lead, in the semiconductor integrated block of the overwhelming majority, all needing to use plastic packaging lead frame, is basic material important in electronics and information industry.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of plastic packaging lead frame.
In order to solve the problems of the technologies described above, the utility model provides a kind of plastic packaging lead frame for low power electric appliance, by multiple lead frames unit single composition, each lead frame interconnects by dowel between unit, lead frame unit comprises fin and terminal pin, bend in fin and terminal pin junction, fin and terminal pin plane of living in is at a distance of 1.27 ± 0.02mm.
As further improvement of the utility model, lead frame cell width is 8.89 ± 0.025mm.
As further improvement of the utility model, described terminal pin is provided with three, and terminal pin width is 0.72 ± 0.02mm, and thickness is 0.5 ± 0.01mm.
As further improvement of the utility model, described terminal pin is provided with bonding region, and the pressure-sizing degree of depth in bonding region is 0.02-0.04mm.
As further improvement of the utility model, described lead frame unit is provided with location hole, and location hole diameter is 1.55 ± 0.05mm.
Adopt said structure, its beneficial effect is: the bonding region pressure-sizing depth requirements of this framework both sides terminal pin is higher, both sides symmetry, and difficulty of processing coefficient increases, but added value is high, is widely used in, in low power high-accuracy electrical equipment, playing an important role.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model plastic packaging lead frame.
In figure: 1-lead frame unit, 2-fin, 3-terminal pin, 4-bonding region, 5-location hole.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1, a kind of plastic packaging lead frame for low power electric appliance, by 1 single composition of multiple lead frames unit, between each lead frame unit 1, interconnect by dowel, lead frame unit 1 comprises fin 2 and terminal pin 3, bend in fin 2 and terminal pin 3 junctions, fin 2 and terminal pin 3 plane of living in are at a distance of 1.27 ± 0.02mm, lead frame unit 1 width is 8.89 ± 0.025mm, described terminal pin 3 is provided with three, terminal pin 3 width are 0.72 ± 0.02mm, thickness is 0.5 ± 0.01mm, described terminal pin 3 is provided with bonding region 4, the bonding region 4 pressure-sizing degree of depth are 0.02-0.04mm, described lead frame unit is provided with location hole 5, location hole 5 diameters are 1.55 ± 0.05mm.
The bonding region 4 pressure-sizing depth requirements of this framework both sides terminal pin are higher, both sides symmetry, and difficulty of processing coefficient increases, but added value is high, is widely used in, in low power high-accuracy electrical equipment, playing an important role.
Within the similar designed plastic packaging lead frame of technical characterictic of any employing and the utility model will fall into protection range of the present utility model.
Claims (5)
1. the plastic packaging lead frame for low power electric appliance, by multiple lead frames unit (1) single composition, between each lead frame unit (1), interconnect by dowel, it is characterized in that: lead frame unit (1) comprises fin (2) and terminal pin (3), bend in fin (2) and terminal pin (3) junction, fin (2) and terminal pin (3) plane of living in are at a distance of 1.27 ± 0.02mm.
2. a kind of plastic packaging lead frame for low power electric appliance according to claim 1, is characterized in that: lead frame unit (1) width is 8.89 ± 0.025mm.
3. a kind of plastic packaging lead frame for low power electric appliance according to claim 1, is characterized in that: described terminal pin (3) is provided with three, and terminal pin (3) width is 0.72 ± 0.02mm, and thickness is 0.5 ± 0.01mm.
4. a kind of plastic packaging lead frame for low power electric appliance according to claim 1, is characterized in that: described terminal pin (3) is provided with bonding region (4), and bonding region (4) the pressure-sizing degree of depth is 0.02-0.04mm.
5. a kind of plastic packaging lead frame for low power electric appliance according to claim 1, is characterized in that: described lead frame unit is provided with location hole (5), and location hole (5) diameter is 1.55 ± 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145074.XU CN203850289U (en) | 2014-03-28 | 2014-03-28 | Plastic-sealed lead frame for low-power electrical appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145074.XU CN203850289U (en) | 2014-03-28 | 2014-03-28 | Plastic-sealed lead frame for low-power electrical appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850289U true CN203850289U (en) | 2014-09-24 |
Family
ID=51563269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145074.XU Expired - Fee Related CN203850289U (en) | 2014-03-28 | 2014-03-28 | Plastic-sealed lead frame for low-power electrical appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928428A (en) * | 2014-03-28 | 2014-07-16 | 张轩 | Lead frame for small-power electric appliance |
-
2014
- 2014-03-28 CN CN201420145074.XU patent/CN203850289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928428A (en) * | 2014-03-28 | 2014-07-16 | 张轩 | Lead frame for small-power electric appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20170328 |