What is the purpose of tinning the conductor in low-voltage electronic cables?

Tinning the conductor in low-voltage electronic cables primarily serves the purpose of improving corrosion resistance. When copper conductors are exposed to the air, they can oxidize, which leads to a buildup of copper oxide that can increase electrical resistance and degrade the performance of the cable over time. By applying a thin layer of tin to the surface of the copper, it creates a protective barrier that prevents moisture and oxygen from reaching the copper, thereby reducing the risk of oxidation.

This protective layer not only helps maintain the integrity of the electrical connection but also prolongs the lifespan of the cable in environments where humidity and various contaminants might be an issue. The tin coating can also enhance solderability, ensuring better connections during assembly and repair.

While enhancing conductivity, flexibility, and tensile strength could be factors in other contexts, they are not the primary purpose of tinning conductors in low-voltage applications. The focus of tinning is mainly on preventing corrosion to secure long-term functionality and reliability of the electrical system.