沉浸（Immerse）.docVIP

沉浸（Immerse） Thest @ 2010-6-10 First, what is gold-plated: whole plate gold-plated. Generally refers to [electric gold-plated] [nickel plated gold plate] [electrolytic gold] [electric gold] [electric nickel gold board], there are soft gold and hard gold (usually used as gold fingers) distinction. The principle is that the nickel and gold (commonly known as gold salts) dissolved in chemicals, the circuit board is immersed in the plating cylinder and the current in the circuit board copper foil surface generation nickel gold plating, nickel gold because of its high hardness, wear resistance, oxidation characteristics to use widely in the name of the electronic products. Two, what is the gold: the method by chemical redox reaction to form a layer of coating thickness, generally, is a chemical nickel gold layer deposition method, can achieve a thick layer of gold, usually called gold. The difference between gold plate and gold plated plate 1, Shen Jin and gold-plated formed by the crystal structure is different, Shen Jin for gold thickness is much thicker than gold-plated, gold deposit will be golden yellow, more yellow compared to gold-plated, more satisfied with the customer. 2, sink gold and gold-plated formed by the crystal structure is different, sink gold than gold-plated is easier to weld, will not cause welding bad, cause customer complaints. The stress of the gold plate is easier to control, and it is more conducive to the processing of the bonding products. At the same time, because the gold is more soft than the gold plating, the golden board is not wearable. 3. The gold plate only has nickel gold on the pad. In the skin effect, the signal transmission is in the copper layer, which will not affect the signal. 4, the deposition of gold is more compact than that of gold, so it is difficult to produce oxidation. 5, as wiring becomes more and more dense, line width and spacing have reached 3-4MIL. Gold plating is easy to produce gold wire short circuit. The gold p