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PCB color generally refers to the oil color on the board that is most intuitively seen when you get a PCB board. The color of the surface of the PCB is the color of the solder resist. PCB board dyeing pigment is a hardened resin. This hardened resin has colored pigments on it. We print color onto PCB by screen printing. PCB colors are green, black, blue, yellow, purple, red, and brown. Some manufacturers have developed white, pink, and other colored PCBs ingeniously.
This is the most popular PCB color. Therefore, many people have always mistakenly thought that PCBs are green, or most of them are green. Green adds clarity to the printed circuit board. Because the green PCB will produce a sharp contrast with the white text, thereby enhancing readability. In addition, the green PCB surface treatment will reflect less light, which helps reduce glare. Therefore, the green PCB is essential for printed circuit boards that require a thorough inspection. pcb blue vs green, the green pcb is better.
White PCB looks clean in various environments, becoming more and more popular. But because white PCBs tend to hide traces, white PCBs are still not the first choice. If we use a single headlight, it will become challenging to inspect the white PCB. These white PCBs look particularly good in black screen printing.
Yellow PCB has attracted people's attention all over the world. Like many other new PCB colors, yellow PCB can quickly meet different needs such as style, cleanliness, and visibility. Although yellow PCB looks pleasing, it has one significant drawback-poor contrast with traces and screen printing. Therefore, yellow PCBs are challenging to use in various standard applications.
Blue PCB is considered a heavy board for labels because it provides significant screen printing contrast. This PCB color is not as eye-catching as the green PCB, black PCB, or white PCB, but blue PCB is the first choice for PCB color because it provides an excellent aesthetic choice. If the blue PCB is mounted on the LCD, it is ideal because the blue PCB does not produce sharp contrasting edges and bright background colors.
Many PCB manufacturers are keen to adopt red due to some of the advantages that red PCBs provide. What are these advantages? The red PCB offers excellent visibility and clearly defines the contrast of traces, planes, and blank areas. The silkscreen looks very beautiful against the background of the red PCB.
Black pcbs are as popular as white PCBs. These two PCB colors produce low contrast and can easily mark significant components. However, the main disadvantage of black PCB and white PCB is that specific details may condense light and have small shadows. This shadow makes tracking difficult. Therefore, it is not appropriate to use black PCBs in various high temperatures applications because black PCBs may discolor the screen printing. Moreover, the black PCB board is a mixture of cobalt and carbon, and the mix of carbon and carbon may have less conductivity.
Those who know more about electronic products will find that PCB colors are generally green. Why is this? The green PCB production process is the most mature and straightforward, and the green PCB is also more environmentally friendly. In addition to green PCB, PCB colors have white, yellow, red, blue, matte, and even chrysanthemum, purple, black, bright green, etc.
The existence of white PCB is because we usually use it to make lamps and lanterns, and the use of other PCB colors is mainly to distinguish different product samples. During the entire stage of the company, from R&D to product landing, depending on the various uses of the PCB. The experiment board may be purple PCB, the keyboard will be red PCB, and the internal panels of the computer will be black PCB. We distinguish and distinguish PCBS by their color. In addition, PCB colors are primarily green for the following reasons.
Visual inspection is crucial in the circuit board manufacturing process. Although a kind of optical appearance inspection machine called AOI is mainly used now, the final check is performed by a well-trained inspector with direct visual observation. If the PCB color is bright yellow or red, it will be dazzling, so these PCB colors are not suitable for inspection. In addition, if it is a black PCB or a white PCB, debris, broken wires, residual copper, etc., will not be obvious and will make the workers' eyes tired. With this in mind, it is a wise choice to use green on the PCB color.
Since green PCB has a wide range of uses, Green PCB is available in production and procurement areas. In addition, in mass production, the same color paint can be used to reduce the production line cost, so the purchase cost of green paint will be lower than other costs. Therefore, green is the most common resist, advantageous in manufacturing cost and delivery time.
Generally speaking, electronic products have to go through board making and patch welding of components. There are several steps in making the board in the yellow lightroom. When the PCB color is green, the visual effect in the yellow light room is better. But this is not the main thing. When soldering the patch, it must be checked by brushing the tin on the solder paste, the patch, and the AOI at the back. These processes all require optical positioning and calibration, and the background color of the green PCB has a better recognition effect on the instrument.
The blue PCB ink and the black PCB ink are relatively conductive because they are doped with cobalt and carbon. Therefore, there may be a risk of a short circuit. The green PCB is more environmentally friendly and will not release toxic gases when used in a high-temperature environment.
In addition, the color of the substrates such as black PCB, purple PCB, blue PCB, and light PCB is too dark, which will increase the difficulty of checking and repairing the motherboard, and the process is not easy to control. Use black PCB as an example; black PCB is most likely to cause apparent chromatic aberration due to process and raw material ratio problems in production, resulting in a high PCB defect rate.
The traces of the black PCB are not easy to distinguish, which will increase the difficulty of later maintenance. Many PCB factories do not use black PCBs. Green PCB substrates are available in the military industry and industrial control, products with extremely high-quality requirements. But the PCB color will not affect its performance in the slightest. It is not difficult for us to understand why the PCB color is mainly green. Pcbsic is the Shenzhen pcb Assembly Manufacturer, we have different colour pcb for you.
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