PCB board (Printed Circuit Board) is an indispensable part of electronic products. It carries various electronic components and connects them so that electronic equipment can work properly. However, you may be wondering why most PCB boards are green? There are some historical and technical reasons for this.
First, let's take a look at the PCB board production process. PCB boards are usually substrates composed of fiberglass and resin, covered with copper foil. In the process of making PCB boards, chemical coatings need to be used to cover the copper foil to protect the copper foil from being etched away during the subsequent etching process. In the early production of PCB boards, the chemical paint used was green. Therefore, the earliest PCB boards also appeared green.
In addition to historical reasons, green PCB boards also have technical considerations. The green color helps reduce eye fatigue, making electronic engineers more comfortable when performing soldering and inspection. In addition, the green PCB board also has good contrast, making printed logos and logos more clearly visible.
In addition, green PCB boards also have certain anti-corrosion capabilities. Since PCB boards are usually used for a long time, they need to have a certain degree of durability. Green chemical coatings can effectively protect copper foil from oxidation and corrosion, thereby extending the service life of PCB boards.
Although green is the mainstream color of PCB boards, PCB boards can actually come in a variety of colors, such as red, blue, yellow, etc. PCB boards in these colors are usually used for specific application scenarios, or for aesthetic and personalization considerations. However, no matter what color the PCB board is, their basic structure and function are similar.
In general, why PCB boards are mostly green is mainly due to historical reasons and technical considerations. Green PCB boards not only have good contrast and anti-corrosion capabilities, but also reduce eye fatigue for electronic engineers. Of course, with the continuous development of technology, the colors of PCB boards are also constantly enriched and diversified.