This is the basic knowledge of understanding environmentally friendly tin. The sound of rustling, bite hard with your mouth, as if biting into a rustling sound, called Ximing. The first way to identify the true and false solder paste is as follows: Tin is a silver-white metal, and a golden oxide film is often formed on the surface of newly poured tin ingots. Because the quality of solder paste will endanger all the connectivity of electronic equipment after electric welding, not only the connection in structure, but also the on-off of the characteristics of electrical equipment, if the above-mentioned experimental inspection method is used, overflow and reflow will not only It is a waste of time, and the difference between different circuit boards and batch numbers will be very large. To choose a suitable solder paste, it depends on whether it meets your own product requirements. In general, the words of many large companies will not have a great impact on this area, because they must have their own fixed businesses, and some newly opened companies. I believe everyone should encounter a lot of them. How to test the quality of solder paste and solder paste?Īt present, there are many styles of solder paste on the market.