Usually the audio circuit pc board is green, in fact, the circuit board also has many colors, such as black, white, yellow, green, etc., why most of the audio circuit pc boards I see are green? Of course, there is another reason that green is the most common color, mainly because the use of green solder mask ink has the following advantages.

　　Better visual effect in yellow light room

　　When the audio circuit pc board is used in the production and processing of electronic products, some processes need to go through the yellow light room. According to the laws of optics, the green circuit board has a better visual effect in the yellow light room, and it is easier to check the production of electronic products.

　　Audio circuit pc board for easy optical positioning correction

　　The production process of the audio circuit pc board itself includes the STM welding process, and this process needs to go through tinning and the final AOI verification. These processes need to be calibrated with the help of optical positioning, and the green background color is better for the recognition of the instrument. .

　　It is convenient for workers to observe the circuit board

　　I believe everyone knows that green is the most eye-friendly color. Therefore, considering that part of the production process and inspection process of the audio circuit pc board need to be completed manually, using green as the background color of the circuit board can reduce the effect of strong light on the eyes of workers. degree of injury.