It is understood that it is in normal useSMTWhen steel mesh is subjected to surface mount technology (SMT) processing, solder paste is an indispensable necessity. Many electronic factory customers encounter the problem that solder paste is about to expire during the normal use of solder paste. Can expired solder paste still be used? The following solder paste manufacturers will discuss this issue.

1First of all, it is necessary to have a detailed understanding of why the quality of the solder paste has expired. The main components of solder paste are tin powder and flux paste, and the quality and performance of the two mainly depend on the service life of the solder paste product. Generally speaking, the service life of solder paste varies from three months, six months to one year depending on the characteristics of the flux, as well as the service life of different products. Once this time point is reached, the solder paste may have expired.

2What adverse effects will there be if expired solder paste is used? Normal useSMTWhen the steel mesh is used to filter solder paste, if the solder paste has expired, it means that the product quality has been affected. This will cause an imbalance in the soldering of the surface mount, thereby affecting the overall product quality of the electronic components. For the company, it is simply harming others without benefiting itself.

3How should expired solder paste be properly handled? For expired solder paste, JJY also suggests applying for scrapping and contacting a solder paste recycling and full utilization company for recycling. In this way, not only can the company control costs, but it can also contribute to the environmental protection industry. Isn't that wonderful?

The use of expired solder paste has a significant impact. It is not about using expired solder paste just to save a little money. These can cause greater damage to electronic components, and the impact on enterprises is even more severe. Therefore, everyone needs to use the solder paste reasonably within its production date, recognize the optimal usage date of the solder paste, and strive for the "first in, first out" policy. In addition, even within the production date, we should store it carefully and properly to prevent the solder paste from deteriorating prematurely and becoming expired.

Solder pasteStorage tips: In5-10℃The environment is6Months, not suitable0℃The following is stored. Thaw to room temperature before use2-4It should be opened after more than an hour to prevent the tin beads from getting damp. Stir well before use.