During the entire SMT production process, Solder Paste printing has a significant impact on SMT quality. There are many factors that affect the quality of solder paste printed products. JJY, a Solder paste manufacturer, gives some examples:

For instance: the stencil manufacturing and processing technology, the stencil aperture design, PCB flatness, the setting of main printing parameters, and the characteristics of the solder paste itself.

How do you choose the right Solder paste for yourself? What are the factors to consider? I believe all partners have had such doubts.

In fact, many factors need to be evaluated to determine whether solder paste meets the standards — for example, tin alloy composition, Flux composition and properties, and Solder Joint Strength.

Solder paste can be classified into several types according to the particle size of the metal powder. Therefore, when deciding which model and specification of solder paste to use and how to choose the right one for a specific production, partners must follow a key criterion: at least five solder balls of that model's larger particle size should fit within the smallest aperture or pad on the stencil.

Soldering quality directly determines whether a solder paste is usable. Based on soldering quality after reflow, statistical analysis is performed on the data. The resulting defects and problems are analyzed to determine whether they are related to solder paste quality. Problems such as poor wetting or short circuits caused by the solder paste are very likely to occur.

On the production floor, simple verification tests can be carried out. By running production trials with different brands and types of solder paste, you can select the one that best suits your product's production characteristics.

If you have any other questions about solder paste, partners are welcome to consult Shenzhen Jiajin Qianyuan Industrial Technology Co., LTD. Let's learn and grow together!