Rotary-tek

 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...

PCBs come in a wide variety of materials, layer counts, and manufacturing processes to accommodate different electronic products and their specific requirements, resulting in numerous classifications. Below, we summarize some common classification methods to briefly introduce PCB types and their manufacturing processes. Let’s analyze this from three perspectives. I. Materials 1. Organic Materials: ① Phenolic Resin: Phenolic resin, also known as Bakelite or Bakelite powder, is originally a colorless or yellowish-brown transparent substance.  When sold on the market, it is often mixed with colorants to produce red, yellow, black, green, brown, blue, and other colors, and is available in granular or powdered forms. Phenolic resin is resistant to weak acids and weak alkalis; it decomposes when exposed to strong acids and corrodes when exposed to strong alkalis.  It is insoluble in water but soluble in organic solvents such as acetone and alcohol. It is obtained through the polycon...