CN202651104U - 48 row lead wire framework - Google Patents

Abstract

The present utility model relates to a lead wire framework, especially to a 48 row lead wire framework. The framework is provided with 48 rows of welding area from the top to the bottom for placing transistors, each row of the 48 rows of welding areas is provided with 268 units for placing transistors, and the 268 units for placing the transistors of each row are arranged on the same horizontal level of the framework. Product density is increased, production efficiency is enhanced, and costs are reduced.

Description

48 row lead frames

Technical field

The utility model relates to a kind of lead frame, particularly relates to a kind of 48 row lead frames.

Background technology

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 gold wire, form the key structure spare of electric loop, it has played the function served as bridge that is connected with outer lead, all needing to use lead frame in the semiconductor integrated block of the overwhelming majority, is basic material important in the electronics and information industry.Present lead frame product, place each bar of transistorized unit such as/7776 of the rows of 36 on the market, this lead frame has 36 rows, has 108 to place transistorized unit on every row, this lead frame length is 185mm, width is 53mm, and this product density is low, causes production efficiency low, production cost is high, in addition, the product of present poor efficiency, its wasting of resources that consumes is large.Growth along with the market consumption, present equipment and the design productivity of product can not need by satisfying the market, need to improve the effective rate of utilization of product, along with the raising of production cost and labour costs, be faced with price pressure, need to reduce production costs by technique improvement.

The utility model content

Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide 48 row lead frames that a kind of density is large, cost is low.

In order to achieve the above object, the utility model adopts following technical scheme:

A kind of 48 row lead frames, described framework is arranged with from top to bottom 48 dischargings and puts transistorized welding region, the every row of described 48 row's welding regions has 268 to place transistorized unit, places transistorized unit and is positioned on the same level line of framework for 268 on described every row.

Described lengths of frame is 250 ± 0.1mm, and width is 70 ± 0.05mm.

Lead frame in the utility model is placed each bar of transistorized unit by/7776 traditional of 36 rows and is brought up to each bar of/12864 transistorized unit of placement of 48 rows, like this, has increased the density of product, and then has enhanced productivity, and has reduced cost.

In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:

1, increases framework density, improve device efficiency, reduce cost;

2, enhance productivity, the device efficiency .Molding of leading portion raising 30% improves 2 times efficient;

3, cost, framework cost 25%, Compound cost 15%;

4, improve resource utilization, the framework utilance improves 30%, Compound consumption and reduces by 20%.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the enlarged drawing of regional A among Fig. 1.

Fig. 3 is the partial enlarged drawing of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

Embodiment

Fig. 1 is the structural representation of 48 row lead frames of present embodiment, and 4 zones are arranged among the figure, is respectively regional A, B, C and D, and Fig. 2 is the enlarged drawing of regional A among Fig. 1.The structure of regional B, C and D is the same with regional A among Fig. 1.48 row SOD882(SOD882 of present embodiment are the titles of the packing forms of miniature electric components and parts) lead frame is arranged with from top to bottom 48 dischargings and puts transistorized welding region, the every row of described 48 row's welding regions has 268 to place transistorized unit, places transistorized unit and is positioned on the same level line of framework for 268 on described every row.Described lengths of frame is 250 ± 0.1mm, and width is 70 ± 0.05mm.

When the utility model density improved, leading portion need to prevent the framework oxidation and guarantee soldering reliability, and remove on request unnecessary waste material in rear operation.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims (2)

1. row lead frame, it is characterized in that, described framework is arranged with from top to bottom 48 dischargings and puts transistorized welding region, and the every row of described 48 row's welding regions has 268 to place transistorized unit, places transistorized unit and is positioned on the same level line of framework for 268 on described every row.

2. 48 row lead frames according to claim 1 is characterized in that, described lengths of frame is 250 ± 0.1mm, and width is 70 ± 0.05mm.

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