source:Industry News release time:2021-12-25 Article author:sznbone Popular:pcb
Most of the circuit boards we use are green? Why is that? Actually, PCB circuit boards are not green. It depends on what color the designer wants to make it.
Under normal circumstances, we choose green, because green is less irritating to the eyes, and the production and maintenance personnel will not be prone to eye fatigue when staring at the production of pcb circuit boards for a long time. It will cause little damage to the eyes. The commonly used colors are blue, white, and purple. , Black, red, all colors are painted on the surface after manufacturing.
1. Reasons for using green in the production of pcb circuit boards
(1) Introduction of domestic ***pcb circuit board production company: Green ink is widely used so far, has a long history, and is also cheap in the current market, so green ink is used by a large number of manufacturers as the main product of their products. colour.
(2) Under normal circumstances, in the process of PCB circuit board production, there are several processes that must pass through the yellow light room, because the effect of green in the yellow light room must be better than other colors, but this Not the main reason. When soldering components in SMT, the production of pcb circuit boards has to go through the process of solder paste and post film and AOI calibration light. These processes all need to be optically positioned and calibrated. The green background color is better for the recognition of the instrument. .
2. What are the common colors in the production of pcb circuit boards
(1) The common production colors of pcb circuit boards are red, yellow, green, blue and black. However, due to problems such as the production process, the quality inspection process of many lines still depends on the naked eye observation and identification of the workers. The eyes are constantly staring at the board under strong light. This process is very tiring. Relatively speaking, green does not hurt the eyes. Therefore, most manufacturers currently use green PCBs in the market.
(2) Introduction of domestic pcb circuit board manufacturers: The principle of blue and black is that they are doped with cobalt and carbon lamp elements, respectively, and have some electrical conductivity. Short circuit problems are likely to occur when power is on, and green pcb The production of circuit boards is relatively environmentally friendly, and generally does not release toxic gases when used in a high-temperature environment.
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 top-tier manufacturers have adopted green PCB board color designs for advanced board types. Accepted green as the default color of the PCB. The above is the reason why PCB circuit board production chooses green.
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