Why Are Most PCB Boards Green? An Analysis of 5 Key Reasons
There are numerous brands of solder mask ink, such as Japan’s Taiyo Ink, Taiwan’s Nanya Resin, Changxing Chemical, Yongshengtai Ink, as well as Guangxin Ink and Suzhou Taiyo Ink. In fact, solder mask ink is not limited to green; it also comes in red, yellow, black, white, blue, and various other colors such as matte black and matte green. However, green remains the most widely used and common choice. Regarding the question of “why standard PCBs often use green,” various theories are circulating within the industry. These can be summarized as follows to help clarify the matter: Closely related to production and inspection processes The production of electronic products relies on two core processes: PCB fabrication and component placement and soldering. During PCB manufacturing, several critical steps must be completed in a UV-light room. Green offers superior visual clarity under UV lighting; however, this is not the primary reason it has become the dominant choice. More imp...