Is lead-free solder paste not tinned because of insufficient activity?

Nowadays, in many industries, such as the electronics industry or other soldering industries, solder paste is needed. However, many factories have reported that the solder paste they purchased does not solder well. Why is this? Some people may ask if the solder does not solder well because of insufficient activity. Here is the answer for everyone:No, then, many people would say that the activity is not enough. Why don't many manufacturers add it to the maximum? Here, I need to answer this question for everyone. JJYSolder paste manufacturerLet me explain the specific situation:

Usually, the active agents in solder paste include organic acid active agents,For example, succinic acid (succinic acid) Adipic acid Succinic anhydride (succinic anhydride) Dibromosuccinic acid Sebacic acid Glutaric acid Itaconic acid Salicylic acid (Pharmaceutical Grade) Dodecanoic acid;There are also surfactants and amine halogen surfactants, etc.They play a role in deoxidation,Clean the surface of the solder,Flux welding,Help to expand,It has functions such as assisting in wetting.

There are many additives in solder paste, among which one is called an active agent. The active agent is a key solvent that determines the activity of the solder paste. As mentioned above, the reason why solder paste does not apply solder is that its activity is too low. When making solder paste, add more active agents and the problem of solder coating can be solved. But is it true that the more active agents are added, the better? The answer is obviously no, because active agents are a kind of corrosive chemical. The active agent content in the solder paste is too high. It is better to have solder on the solder paste, but the solder paste is printed onPCBGo. It will be rightPCBThe board undergoes a certain degree of corrosion, thereby damaging the circuit. At the lightest, lowerPCBThe lifespan of the board can be ruined in severe casesPCBBoard.

From this, it can be seen that the activity of solder paste is not the higher the better, but rather moderate activity. In addition, the same applies to other additives in solder paste. One should not blindly pursue an effect by adding too much, while ignoring the adverse effects brought by excessive addition.

The above indicates that the activity of solder paste is notLead-free solder pasteNot applying solder does not mean insufficient activity, nor does it mean that adding a large amount can achieve soldering. Therefore, everyone should still pay attention to this matter to avoid such incidents. If you still have any questions or want to know more about solder paste, solder paste and other soldering issues, please feel free to consult!!