As we know, when SMT steel stencils are used in surface mount technology (SMT) processing, Solder Paste is an indispensable essential. Many electronics factory customers face the problem that solder paste is about to expire while still in use. Can expired solder paste still be used? Below, the Solder Paste Manufacturer discusses this.

1. First, it is necessary to understand in detail why solder paste expires. The main components of solder paste are tin powder and Flux, and their combined quality and performance determine the service life of the product. Generally speaking, the service life of solder paste ranges from three months to six months or a year, depending on the characteristics of the flux and the product. Once this point is reached, the solder paste may have expired.

2. What adverse effects result from using expired solder paste? When SMT stencils are used to print solder paste, expired solder paste means the product quality has been compromised. This causes unstable soldering on the SMT line, which in turn affects the overall quality of the electronic components. For the company, it is simply harming others without benefiting itself.

3. How should expired solder paste be handled properly? For expired solder paste, JJY recommends scrapping it and contacting a Solder Paste Recycling company for full recovery. In this way, the company can not only control costs but also contribute to environmental protection. Isn't that a great outcome?

Using expired solder paste has a significant impact. It is not worth using expired solder paste just to save a little money, because it can cause far greater damage to electronic components and an even heavier loss to the business. Therefore, everyone should use solder paste reasonably within its shelf life, recognize the optimal use-by date, and follow the "first in, first out" principle. In addition, even within the shelf life, it should be stored carefully to prevent the solder paste from deteriorating prematurely and expiring.

Solder paste storage tips: store in a 5-10℃ environment for up to 6 months; it is not suitable for storage below 0℃. Thaw to room temperature for 2-4 hours before opening to prevent tin beads from absorbing moisture. Stir well before use.