0.2 grams. Tin plating also has great application value in printed electroplating boards and ultra-large-scale integrated circuit chips. However, the gold content in tin-plated empty circuit boards is 0.2 grams. If it is too much, conductivity may occur. Tin plating and its alloys are coatings with good solderability and certain corrosion resistance, and are widely used in electronic components and printed circuit boards.