PPT Trenčianská Teplá
Galvanic gold is used for protection from direct contact of connectors. During the process is applied cca 5-10 um of glavanic nickel and 1-3 um of galvanic gold. In this case we talk about so-called hard gold. In case of surface gold plating, which is alternative to chemical gold, the amount of nickel is the same, but thickness of gold is generally only 0.03-0.05 um. It also serves during the design process as a protection against etching. Final product has completely flat surfaces and it is suitable for SMT. Soldering is slightly different than soldering of classic lead solder and therefore it is important to use different flux and try soldering for each specific conditions. The advantage of this surface adjustment is a good corrosion resistance. It is a lead free technology.