smd type led short pitch lead frame
A short-pitch lead and lead frame technology, applied in electrical components, electrical solid devices, circuits, etc., can solve the problems of high cost and high material consumption, and achieve the effect of improving production efficiency, reducing material consumption and reducing production costs.
Inactive Publication Date: 2015-08-19
HUBEI KUANGTONG ELECTRONICS
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Problems solved by technology
[0004] The purpose of the present invention is to provide a SMD type LED short-pitch lead frame to solve the problems of high cost and large material consumption of the SMD type LED lead frame in the prior art
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[0011] An SMD-type LED short-pitch lead frame, comprising a bracket composed of a plurality of lead frame units 1, a plurality of process side units 2 on both sides of the bracket, and a positioning hole 3 provided on the process side unit 2, two adjacent positioning holes 3 The spacing a is less than 12.0 mm, and the row spacing e of the lead frame unit 1 is less than 8.0 mm. The side width b of the process side unit 2 is less than 5.96mm, the rib width c of two adjacent lead frame units 1 in the functional area is less than 1.96mm, and the width d of the connecting rib is less than 3.0mm.
[0012] Such as figure 1 As shown: the total length L of the lead frame in the present invention is 144.00mm, which is the same as the length of the traditional lead frame, and its width process is adjusted accordingly. The pitch a between two adjacent positioning holes 3 is the pitch a of the lead frame unit 1 .
[0013] plan 1:
[0014] The pitch a of the lead frame unit 1 is less tha...
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A short-pitch lead frame for an SMD (surface mounted device)-type LED (light emitting diode) comprises a stand formed by a plurality of lead frame units (1), a plurality of technical side units (2) on the two sides of the stand, and positioning holes (3) arranged on the technical side units (2). The distance a between two adjacent positioning holes (3) is less than 12.0 mm and the row pitch e of the lead frame units (1) is less than 8.0 mm. The short-pitch lead frame for the SMD-type LED shortens the pitch and row pitch between two adjacent centre lines on a single lead frame for the SMD-type LED. For example: the pitch and row pitch in the lead frame for the SMD-type LED are 9.00 mm and 6.7 mm respectively. The amount of materials of the lead frame is saved by 35.71%, compared to a traditional lead frame for the SMD-type LED which has a pitch of 12.00 mm and a row pitch of 8.00 mm. Thus the material consumption and cost of production are reduced, and the production efficiency is greatly improved at the same time.
Description
technical field [0001] The invention relates to a component for producing surface-mounted SMD LEDs, in particular to an SMD LED short-pitch lead frame. Background technique [0002] Surface-mounted SMD type LED light-emitting diode is a green and environmentally friendly light source. It is a new type of surface-mounted semiconductor light-emitting device. advantage. Its luminous colors include full-color, various monochrome and white light, mainly used in various electronic products, large-size LED backlight, decoration, landscape, lighting, car lights, etc., and will gradually replace traditional lighting. [0003] At present, the size and length of the general lead frame of the SMD type LED package is 144.00mm, the pitch is 12.00mm, the row spacing is 7.80mm, the process edge width is 5.96mm, and the precision copper alloy strip is 0.20mm. The pitch, row spacing, and process edge are all large, which increases the consumption of precision copper alloy strips or precisio...
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IPC IPC(8): H01L33/62
CPCH01L33/62H01L24/97H01L23/49565H01L2924/12041
Inventor 李胜刚
Owner HUBEI KUANGTONG ELECTRONICS