The connecting finger is a component that connects the memory module to the memory slot, and all signals are transmitted through the connecting finger. The golden finger is composed of numerous golden conductive contacts, which are coated with gold and arranged in a finger like shape, hence it is called the "golden finger". Gold finger is actually a special process of coating a layer of gold on a copper-clad board, due to its strong antioxidant properties and high conductivity. However, due to the high price of gold, more memory is now replaced with tin plating. Tin materials have been widely used since the 1990s, and now the "golden fingers" of devices such as motherboards, memory, and graphics cards are all made of tin materials. Only some high-performance server/workstation accessories touch points will continue to use gold plating, which is naturally expensive.

All data and electronic streams of the memory processing unit are communicated with the PC system through the touch of the golden finger and memory slot, which are the output and input ports of the memory. Therefore, its manufacturing process is crucial for memory connection.

Article source: Jiangmen PCB Customizationhttp://www.yonghongpcb.com/