What is the difference between PCB electroplating gold and nickel deposition gold? Below are some materials compiled by the nickel gold production line manufacturer of Suyuan Chemical:
PCB board electroplating obtains gold through electrolysis, and gold is obtained through chemical reduction reactions!
In short, PCB gold plating, like other PCB gold plating, requires power and rectifiers.
There are many types of its technology, including cyanide, non cyanide, non cyanide, citric acid, sulfite, etc.
Non cyanide systems used in the PCB industry.
Chemical gold (electroless gold plating) does not require electricity and accumulates on the surface of the plate through chemical reactions in the solution.
They each have their own advantages and disadvantages. Besides not being powered, printed circuit boards can be made of thick gold. Just extend the time, suitable for making adhesive boards.
There are fewer opportunities for PCB electrochemical solution to be discarded compared to chemical gold.
However, PCB boards require full board conductivity and are not suitable for particularly thin circuits.
Chemical gold is generally thinner (less than 0.2 microns) and has lower purity.
The working fluid can only be discarded to a certain extent.
One method is to use PCB electroplating to form nickel gold
One method is to form a nickel layer through the self oxidation-reduction reaction of sodium hypophosphite, and a gold layer through substitution reaction (Shang Cun (TSB71 and self reduced gold), which is a chemical method.
Besides the differences in the process, there are also the following differences between PCB gold plating and immersion gold plating
The PCB has a thick gold plating layer and high hardness, usually used for sliding parts such as gold fingers when inserting and removing switch cards
Due to the flat surface of the solder pad, it is easy to install and can also be used for lead-free solder.
For more professional information about chemical nickel gold production equipment and chemical nickel palladium production lines, please contact Suyuan Electroplating Equipment Factory
