CN208655622U

CN208655622U - A kind of rolling lead frame

Info

Publication number: CN208655622U
Application number: CN201820828291.7U
Authority: CN
Inventors: 王为玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2019-03-26
Anticipated expiration: 2028-05-31

Abstract

The utility model provides a kind of rolling lead frame.It includes upper, lower two sidebands (1) and be located at sideband (1) in it is upper, lower two rows leadframes unit body (A), it is dowel (2) between the two rows leadframes unit body, the leadframes unit body only includes the terminal pin (3) of six strips, wherein head (301) are silver-plated area, root is connect with sideband (1) or dowel (2), six terminal pins (3) are in longitudinal, it is divided to two rows to arrange, and the head (301) of upper and lower two line leads foot (3) is opposite two-by-two, the head (301) of six terminal pins (3) is located in the same rectangular area altogether.The lead frame structure is more compact, and unit area utilization ratio is high, and enormously simplifies fabrication processing, and obtained size lead frame accuracy is high, and interindividual variation is small, and total quality is high.

Description

A kind of rolling lead frame

Technical field

The utility model relates to a kind of lead frames, refer in particular to a kind of rolling of circuit lead frame discrete device Structure.

Background technique

Chip carrier of the lead frame as integrated circuit is a kind of real by means of bonding material (spun gold, aluminium wire, copper wire) The electrical connection of existing chip internal circuits exit and outer lead, forms the key structure part of electric loop, it is played and outside The function served as bridge of portion's conducting wire connection requires in most semiconductor integrated blocks using lead frame, is that electronic information produces Important basic material in industry.

Existing lead frame process when carrying out semiconductor fabrication is more, is easy to be easy hair in process of producing product Raw positioning not precisely caused dislocation and deformation, structural arrangement is complicated, and material loss is more, therefore, is ensuring final product quality qualification Under the premise of, how to allow material rationally to simplify using maximization and production and has become lead frame manufacturer raising product competition The main target of power.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of rolling lead frame of simple structure and reasonable design, Overcome existing similar product manufacture utilization rate of raw materials not high and complicated process flow, to society provide a kind of production efficiency and Utilization rate of raw materials is high, the good circuit lead frame plate product of product quality.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the utility model is a kind of rolling lead frame Frame, it includes upper and lower two sidebands and upper and lower two rows of leadframes unit bodies in sideband, it is characterised in that: described Upper and lower two rows of leadframes unit body continuous arrangements and parallel corresponding, the two rows leadframes unit in sideband It is dowel between body, the leadframes unit body includes the terminal pin of strip, and root is connect with sideband or dowel, institute Tell that terminal pin is distributed in lead frame cell cube two sides up and down, perpendicular to central part, the head of the terminal pin and central part are silver-plated Area's connection, the central part are irregular rectangle.

The height of the cell cube terminal pin is 0.1-0.3mm.

Intermediate on the dowel to be equipped with location hole, each location hole is every two leadframes unit body continuous arrangements It forms, the positioning bore dia is 0.02-0.09mm, the width 0.8-1.2mm of the dowel.

The head of terminal pin is co-located in a rectangle frame more than central part.

The simple cell cube of the utility model same structure of rolling lead frame continuous arrangement, pin configuration more step up It gathers, meets the miniaturization of contemporary wire frame component, slimming, whole unit area utilization ratio is high, and when production greatly simplifies production work Skill process, obtained size lead frame precision is high, and interindividual variation reduces, and total quality is improved.

Detailed description of the invention

Fig. 1 is the utility model lead frame version part structural schematic diagram.

Fig. 2 is the enlarged drawing in the portion A in Fig. 1.

In figure: 1- sideband；2- dowel；3- terminal pin；301- central part；4- location hole.

Specific embodiment

Embodiment shown in reference to the accompanying drawing is described in detail below the technical solution of the utility model: referring to figure 1, Fig. 2, the utility model are a kind of rolling lead frames, and the utility model is a kind of rolling lead frame, using mould punching Method or chemical etching method can produce.It includes upper and lower two sidebands 1 and upper and lower two row lead frame in sideband 1 Frame cell cube A, upper and lower two rows of leadframes unit body close-packed arrays being located in sideband 1 and parallel corresponding, through having It can infinitely repeat to extend after dowel 2 or sideband 1 connection of two sides, keep structural arrangement compact, improve area utilization；It is described It is dowel 2 between two rows of leadframes unit bodies, intermediate on dowel 2 to be equipped with location hole 4, location hole 4 can prevent wire frame list First body is displaced when processing, and each location hole 4 is consecutively arranged to form every two leadframes unit bodies, is conducive to encapsulate, 4 diameter of location hole is 0.02-0.09mm, the width 0.8-1.2mm of the dowel 2；The leadframes unit Body includes the terminal pin 3 of six strips, and root is connect with sideband 1 or dowel 2, and told terminal pin 3 is distributed in lead frame list Two sides above and below first body, perpendicular to central part 301, there are six irregular rectangles altogether for the central part 301, for carrying integrated core Piece, the head of six terminal pins are connect with the silver-plated area of central part 301 respectively, are co-located in a rectangle frame (dotted line institute Show).It is compared with traditional lead wire frame, the utility model lead frame structure is more compact, and unit area utilization ratio is high, and big Fabrication processing is simplified greatly, obtained size lead frame accuracy is high, and interindividual variation is small, and total quality is high.

Above embodiments are only to illustrate the utility model and not limit technical solution described in the utility model；Cause This, is although this specification has been carried out detailed description to the utility model referring to above-mentioned each embodiment, this field It is to be appreciated by one skilled in the art that still can modify to the utility model or equivalent replacement；And all do not depart from this The technical solution and its improvement of the spirit and scope of utility model, should all cover the scope of the claims in the utility model In.

Claims

1. a kind of rolling lead frame, it includes upper and lower two sidebands (1) and upper and lower two row lead frame in sideband (1) Frame cell cube, it is characterised in that: the described upper and lower two rows of leadframes unit body continuous arrangements being located in sideband (1) and flat Row is corresponding, is dowel (2) between the two rows leadframes unit body, the leadframes unit body includes strip Terminal pin (3), root are connect with sideband (1) or dowel (2), and told terminal pin (3) is distributed in lead frame cell cube or more two Side, perpendicular to central part (301), the head of the terminal pin is connect with central part (301) silver-plated area, the central part (301) For irregular rectangle.

2. rolling lead frame according to claim 1, it is characterised in that: the height of the terminal pin (3) is 0.1- 0.3mm。

3. rolling lead frame according to claim 1, it is characterised in that: intermediate be equipped with is determined on the dowel (2) Position hole (4), each location hole (4) are consecutively arranged to form every two leadframes unit bodies, and the location hole (4) diameter is 0.02-0.09mm, the width 0.8-1.2mm of the dowel (2).

4. according to rolling lead frame described in claim 1, it is characterised in that: the head of central part (301) and terminal pin (3) is total It is located in a rectangle frame.