Whether The Appearance Of The PCB Board Is As Good As Possible

Many people use the color of the PCB to distinguish the quality of the board. In fact, the color of the motherboard has nothing to do with the performance of the PCB.

PCB board is not that the better the appearance, the easier it is to use.

The color of the surface of the PCB is actually the color of the solder resist. The solder resist can prevent the occurrence of wrong soldering of the components, and delay the service life of the device, and prevent the oxidation and corrosion of the device circuit.

If you understand the PCB boards of large companies, you will find that the color is generally green. This is because the green technology is the most mature and simple.

In addition to green, the color of PCB can be described as "bells and whistles": white, yellow, red, blue, matte colors, and even chrysanthemum, purple, black, bright green, etc. The existence of white, because it is necessary to make lighting products The color materials used, and the use of other colors, are mostly for labeling products.

For the finished product, the effect of different inks on the board is mainly reflected in the appearance, that is, whether it is good or not. For example, green includes sun green, light green, dark green, matt green, etc., the color is too light, it is easy to see the plug The appearance of the board after the hole process is not good, and some manufacturers' inks are not good, the resin and dye ratio are problematic, there will be problems such as bubbles, and slight changes in color can also be detected; the impact on semi-finished products is mainly reflected In terms of the difficulty of production, this problem is a bit complicated to explain. Different color inks have different coloring processes, such as electrostatic spraying, spraying, and screen printing. The ink ratio is also different. A slight error will cause the color to appear. problem.

Although the color of the ink has no effect on the PCB board, the thickness of the ink has a great impact on the impedance, especially for the water-gold board, which has an extremely strict control on the thickness of the ink; red ink, thickness and bubbles are easier to control, and red ink covers On the line, some defects can be covered, and the appearance is more beautiful, but the bad thing is that the price is more expensive. When imaging, red and yellow exposures are more stable, and white is the most difficult to control.

In summary, the color has no effect on the performance of the finished board.PCB motherboards of different colors are mainly for product sales. It is not recommended that you use color as an important consideration in PCB processing.