How to Judge The Quality Difference of PCB Boards from the PCB Color

PCB buyers always have doubts about the color of PCB, and do not know what color PCB board is of high quality. Today, I will explain what kind of influence the color of PCB has on its performance.

First of all, as a printed circuit board, PCB mainly provides interconnection between electronic components. There is no direct relationship between color and performance, and the difference in pigments does not affect the electrical properties. The performance of the PCB board is determined by factors such as the material used (high Q value), wiring design and several layers of board. However, in the process of washing the PCB, black is the most likely to cause color difference. If the raw materials and manufacturing process used by the PCB factory are slightly different, the PCB defect rate will increase due to the color difference. This directly leads to an increase in production costs.

In fact, the raw materials of PCB are seen everywhere in our daily life, that is, glass fiber and resin. The glass fiber and resin are combined and hardened to become a heat-insulating, insulating, and not easy to bend board, which is the PCB substrate. Of course, a PCB substrate made of glass fiber and resin alone cannot conduct signals. Therefore, on the PCB substrate, the manufacturer will cover a layer of copper on the surface, so the PCB substrate can also be called a copper-clad substrate.

As the circuit traces of the black PCB are difficult to identify, it will increase the difficulty of repair and debugging in the R&D and after-sales phases. Generally, if there is no brand with profound RD (R&D) designers and a strong maintenance team, black PCBs will not be easily used. It can be said that the use of black PCB is an expression of a brand’s confidence in the RD design and post-maintenance team. From the side, it is also a manifestation of the manufacturer’s confidence in its own strength.

Finally, based on the above reasons, major manufacturers will carefully consider when choosing PCB board designs for their products. Therefore, most of the products with large shipments in the market that year used red PCB, green PCB or blue PCB version. Black PCBs can only be seen on mid-to-high-end or top flagship products, so customers should not think of black PCBs anymore. PCB is better than green PCB

XPCB Limited is a manufacturer specializing in the production of high-precision double-sided, multi-layer and impedance, blind buried vias, and thick copper circuit boards. The products cover HDI, thick copper, backplanes, rigid-flex combined, buried capacitance and buried resistance, Golden Finger and other kinds of circuit boards, which can meet the needs of customers for all kinds of products.