First of all, let's have a brief understanding of what sinking gold is?

Gold deposition is one of the surface treatment processes for PCB, which uses chemical deposition to generate a layer of coating through chemical oxidation-reduction reaction. It is usually thicker and belongs to one of the chemical nickel gold deposition methods, which can achieve a thicker gold layer.

What should I do if I don't tin a PCB sinking board? To solve the problem, first we need to analyze the reasons why PCB gold plates do not solder, mainly including the following points:

(1) Non tin coating caused by oxidation of PCB board;

(2) The temperature of the furnace is too low or the speed is too fast, resulting in the tin not melting;

(3) If there is a problem with the solder paste itself, you can try changing it to a different type of solder paste;

(4) The problem with battery cells is that they are usually made of stainless steel and require electroplating with a layer of chromium before tin can be applied.

Now that we understand the reason why PCB gold plates cannot be coated with tin, let's talk about the solutions as follows:

(1) Regularly analyze the composition of the liquid medicine and add it in a timely manner, increase the current density, and extend the electroplating time.

(2) Regularly check the consumption of anodes and make reasonable supplements;

(3) Reasonably adjust the distribution of anodes, reduce current density appropriately, design the wiring or splicing of boards reasonably, and adjust the gloss agent;

(4) Strictly control the storage time and environmental conditions during the storage process, and strictly operate the production process;

(5) Use solvents to clean debris. If it is silicone oil, a specialized cleaning solvent needs to be used for cleaning;

(6) During the PCB welding process, the temperature should be controlled between 55-80 ℃ and sufficient preheating time should be ensured.

The above are some solutions to the issue of "What should I do if I don't solder a PCB gold plate?" We hope they can be helpful to you. If you find any discrepancies, please contact us for correction.