Most of the circuit boards we use are green? Why is this? In fact, the production of pcb circuit boards is not necessarily green, it depends on what color the designer wants to make it, then what color it is.
Under normal circumstances, we choose green, because green is less irritating to the eyes. Production and maintenance personnel are not prone to eye fatigue when staring at the production of pcb circuit boards for a long time, and the eyes are less harmful. Commonly used colors are blue, white, purple , yellow, black, red, all kinds of colors are painted on the surface after manufacture.
1. Reasons for using green in PCB circuit board production
(1) Introduction of domestic professional pcb circuit board production company: Green ink is the most widely used and the longest in history, and it is also the cheapest in the current market, so green is used by a large number of manufacturers as their own products the main color of .
(2) Under normal circumstances, in the process of PCB circuit board production, several processes must go through the yellow light room, because the effect of green in the yellow light room must be better than other colors, but this is not the best The main reason. When SMT solders components, the production of pcb circuit boards has to go through the process of tinning and patching and the final AO calibration light. These processes all need to be optically positioned and calibrated, and the green background color can identify the instrument. better.
2. What are the common colors in the production of pcb circuit boards
(1) Common pcb circuit board production colors are red, yellow, green, blue and black. However, at present, due to problems in the production process and so on, the quality inspection process of many lines still has to rely on workers to observe and identify with the naked eye (currently most of them use flying probe testing technology). In the case of strong light, the eyes keep staring at the board. This process is very tiring. Relatively speaking, green is the least harmful to the eyes, so most manufacturers in the market currently use green PCBs.
(2) Introduction of well-known domestic pcb circuit board manufacturers: the principle of blue and black is that they are mixed with cobalt and carbon lamp elements respectively, and have certain electrical conductivity. Short circuit problems are likely to occur in the case of power on, and green The production of pcb circuit boards is relatively environmentally friendly, and generally does not release toxic gases when used in high temperature environments.
Finally, the editor would like to add that since the middle and late stages of the last century, the industry has begun to pay attention to the color of PCB boards, mainly because many high-end boards of first-tier manufacturers have adopted green PCB board color design, so People have accepted green as the default color for PCBs. The above is the reason why pcb circuit board production chooses green.
