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Copper substrate process technology and optimization

View:1824Time:2020-05-06

PCB is the most basic structure in the electronics industry, and process technology refers to the final surface treatment of it; That is to say, important methods such as anti-corrosion and electroplating treatment for copper substrates; The selection of substrate has a significant impact on the electrical properties such as voltage resistance, insulation resistance, dielectric constant, loss, environmental protection, moisture absorption, etc. of the finished substrate;                      


The copper substrate process (tin spraying) is the earliest processing method, which has the advantages of being able to store for a long time, low cost, and mature technology. However, due to surface flatness issues, there are limitations in SMT. If the board is particularly thick or thin, tin spraying has limitations and is inconvenient to operate;


Simultaneously electroplating chemical gold or silver: It is a composite material formed by dissolving a certain resin, drying it to make a semi cured sheet, and then stacking it together according to the required thickness. The outermost layer is made of copper foil, which is heated and pressed to form a plate-like composite material; The advantage is that it can be stored for a long time of 12 months, suitable for contact opening design and gold wire binding, and suitable for point testing; But the cost is relatively high, and there are also issues with surface uniformity; More attention should also be paid to design;


Shenzhen Wuzhou Technology Co., Ltd. is a professional manufacturer specializing in the production of PCB circuit boards (aluminum substrates, copper substrates, fiberglass substrates) and SMT surface mount technology; And we have a professional LED solution R&D and design team, with a complete production chain!


The factory opened in September 2013, formerly known as Shenzhen Yili Weiye Technology Co., Ltd. In order to expand production scale, reduce production costs, and respond to the strict environmental protection measures of the Shenzhen Municipal Government, all PCB factories have been relocated to Nanzha Fourth District, Humen Town, Dongguan City, adjacent to Shenzhen. However, the marketing department is still located in Shenzhen and has a branch in Guangzhou. SMT patches are also kept in Fuyong Town, Shenzhen, making it convenient to connect with various domestic and international customers!


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