D2PAK rectifier diode producing and soldering technology

A rectifier diode and welding process technology, applied in the field of D2PAK rectifier diode production welding process, can solve the problems of difficult follow-up work, complicated process, poor heat dissipation, etc., to improve production efficiency and quality, ingenious and reasonable process, reduce crystal The effect of grain damage

Active Publication Date: 2013-12-25
NANTONG HORNBY ELECTRONICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The products produced by the traditional rectifier diode manufacturing process have poor heat dissipation, many consumables, complex processes, and difficult follow-up work.

Method used

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Examples

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Comparison scheme
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Embodiment Construction

[0031] D. 2 The production welding process of PAK rectifier diodes is composed of the following steps: pre-operation preparation; loading frame; frame brushing paste; copper particle filling; ;Frame conversion; Jumper wire filling; Visual inspection; Welding;

[0032] 1) Preparation before operation: clean the work site and table; clean the workbench with isopropanol and singlet cloth, the worktable of the glue dispenser, the frame positioning plate, the mesh plate, various suction cups, and stainless steel plates; install glue on the glue dispenser head and solder paste bottle; use a rubber tube to connect the suction cup suction pen to the vacuum air source, turn on the vacuum and compressed air source, and adjust the vacuum air source to a suitable operation; fix the stencil on the Stand-by on the printing table; the filling of dies and jumpers must use stainless steel plates to reduce friction and damage to chips and jumpers; it is forbidden to wipe the control panel...

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PUM

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Abstract

The invention relates to the production technology of rectifier diodes, in particular to a D2PAK rectifier diode producing and soldering technology. The D2PAK rectifier diode producing and soldering technology has the advantages that the technology is ingenious and reasonable, heat dissipation is good, a novel structural frame is adopted, materials are saved by one third, the time of process production is reduced, the external soldering of leading wires brings great convenience for follow-up work (crystalline grain damage caused by the soldering technology is reduced, and the releasing space of heat stress in a later using process is improved), and the production efficiency and quality of products are improved greatly. In addition, the D2PAK rectifier diode can completely replace a photovoltaic tube encapsulated by the diode, and is good in heat dissipation performance, encapsulated crystalline grains can be improved to 180mil compared with the size of the diode, the forward current capable of being borne by the encapsulation of the large-size crystalline grains is increased compared with the diode, the application range is wider, and the service life of a solar photovoltaic connecting box is prolonged.

Description

technical field [0001] The invention relates to a rectifier diode production process, in particular to a D 2 PAK rectifier diode production welding process. Background technique [0002] A rectifier diode (rectifier diode) is a semiconductor device used to convert alternating current into direct current. Usually it consists of a PN junction with two terminals, anode and cathode. Its structure is shown in Figure 1. The carriers in the P region are holes, and the carriers in the N region are electrons, forming a certain potential barrier between the P region and the N region. When a positive voltage is applied to the P region relative to the N region, the potential barrier is lowered, and storage carriers are generated near both sides of the potential barrier, which can pass a large current and have a low voltage drop (typically 0.7V), which is called forward guidance. pass status. If the opposite voltage is applied, the potential barrier is increased, it can withstand hi...

Claims

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Application Information

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IPC IPC(8): H01L21/50B23K37/04
Inventor 石友玲李国良陆延年刘海花
Owner NANTONG HORNBY ELECTRONICS
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