ASEMI plating process
Return ListSource：Asemi Date：2019.04.29 Read：0
process of
electronic components
In the manufacture of electronic components, electroplating is to deposit a predetermined metal or alloy on the surface of our electronic components by electrolysis to achieve a protective and conductive function. We can give a small example: Schottky diode MBR30100.
The electroplating of electronic components
Electroplating is an indispensable process in the production of electronic components such as Schottky diodes, fast recovery diodes, and rectifier bridge stacks. In fact, until now, most factories have adopted manual methods on the coatings of Schottky diodes and rectifier bridges. But what we need to emphasize here is that electroplating is an effect that has been used for a long time in industrial production and production, and the process is relatively mature.
01
Part of the plating is to get some metallic color effects, such as high light, which can make the product have obvious bright spots. In the manufacture of electronic components, electroplating is to deposit a predetermined metal or alloy on the surface of our electronic components by electrolysis to achieve a protective and conductive function. The electroplated metal is deposited on the surface of the rectifier bridge stack, diodes and other components to form a uniform and good adhesion coating, which can prevent corrosion and wear, as well as conductive properties.
02
We can give a small example: Schottky diode MBR30100. Schottky diodes can be divided into two types, one is point contact type and the other is surface bonding type. The Schottky diode MBR30100 is a point contact type diode. The point contact diode die is connected to the surface of the epitaxial layer of the semiconductor by a wire to form a structure called gold half contact.
03
The surface bonding type is more complicated, and it is necessary to form a SiO2 layer on the semiconductor epitaxial layer and then etch a hole by photolithography, and then deposit a metal film, which is generally made of molybdenum or titanium (this metal is chemically It is called barrier metal. Therefore, Schottky diodes are often referred to as barrier diodes. then, a layer of metal is electroplated on the basis of gold half-contact to form electrodes.
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