The color of the PCB boards that we see is actually the color of the welded agent. The effects and influences of different colors of welded welded agents in manufacturing are different, resulting in different choices of the final manufacturer.

The first is that the welded agent needs to be better passed through the production in production to ensure that the exposure needs to be exposed, and the influence of welded agents of different colors on ultraviolet light is different. Among them It is more suitable for coating.

Secondly, there is a higher difference between the circuit part that requires the circuit in the circuit inspection and the parts without circuits. It is more obvious to use yellow and green. Distinguish, so yellow and green are more suitable.

In addition, when machines and artificial testing, the color of yellow welded agents can cause the difference between the yellow background and the welded joints is not obvious, which is not conducive to high -efficiency inspection, so yellow is excluded.

Finally, green has better comfort during artificial visual examination, and it is not easy to cause visual fatigue. Therefore, green welded agents become mainstream, making the green PCB demand the largest, and the output is much higher than other colors than other colors. , Make the price cheaper, so most of the PCB we see is green.

Why are most of the PCB board green? The answer is not cheap

Of course, some merchants have special needs, and they will also customize PCB of different colors. At present, black and blue PCBs are common colors except green, but the price is more expensive, so it is generally located in higher positioning products. Seeing it, in the future, with the increase of players' needs, we will see more colorful PCBs.