There are various colors of circuit boards, including green, blue, red, black, yellow, etc., which are mainly determined by the resin coating used on the surface of their copper-clad laminates. Different colors of circuit boards usually use different colors of resin, and the color itself does not directly affect the performance of the circuit board, but it has certain significance in identification, aesthetics, and special applications.
Usually, the surface coating of PCB has the following common colors:
Green: The most common color of circuit boards, usually composed of a green epoxy resin coating.
Blue: PCB coated with blue resin, commonly used in high-frequency circuits.
Red: Some high-end products or branded devices may use red circuit boards.
Black: Used for high-end devices, it has good antioxidant capacity.
Special colors such as white, yellow, purple, etc.: These colors are usually used for customized or personalized PCBs.
Although there are multiple color options, green is the most common, not only due to aesthetic and design needs, but also for various reasons.
The reason why green circuit boards are so common is firstly because green is the most easily visible color and gives people a sense of comfort, which is also one of the reasons why it is widely used.
In addition to visual advantages, green circuit boards also have advantages in the manufacturing process. For example, green ink can achieve smaller errors and higher precision, and the plug hole characteristics of green ink are relatively good, which can better fill and seal the small holes on the circuit board, thereby improving the stability and reliability of the circuit board.
In terms of protecting circuit boards, a green surface can effectively prevent the circuit board from external ultraviolet radiation, electromagnetic interference, and heat radiation, which helps to extend the service life of the circuit board and improve the overall performance of electronic devices.
Other colored circuit boards also have their specific application scenarios, with black circuit boards typically used for high-end applications such as high-frequency circuits, high-speed signal transmission circuits, and high-end computers.
This is because black circuit boards can provide better signal isolation and electromagnetic interference control.
However, the manufacturing cost of black circuit boards is relatively high, so they are not suitable for all scenarios.
White circuit boards are commonly used on surfaces that require reflection, such as LED light boards.
White circuit boards can eliminate reflective plates, thereby reducing costs and improving overall product performance.
Blue, red, and other colored circuit boards are more commonly used for aesthetics and to increase product premiums, and there is no difference in performance between these colored circuit boards.
The choice of circuit board color mainly depends on the actual application scenario and personal preferences. Green circuit boards are widely used due to their visual advantages, manufacturing accuracy, and protective performance.
