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How to judge the quality of multi-layer PCB circuit board from color

Time:2020-11-24 Preview:190

First, 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 have much impact on the performance of electrical appliances. but

Yes, 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. In the process of washing PCB, color is the most likely to cause color difference. If the PCB factory uses

A slight deviation of the raw materials and the production process will cause the PCB defect rate to 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 kind of heat insulation, insulation, and not easy to bend

This is the PCB substrate. Of course, a PCB substrate made of glass fiber and resin alone cannot transmit signals, so on the PCB substrate, the manufacturer will cover one layer of copper on the surface, so

The PCB substrate can also be called a copper substrate.

Since 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 stages. Generally, if there are no skilled RD (R&D) designers and a strong maintenance team

The brand is not easy to use black PCB. It can be said that the use of black PCB is a performance of a brand's confidence in the RD design and post-maintenance team. From the side, it is also the manufacturer's confidence in its own strength.

An embodiment of.

Based on the above reasons, major manufacturers will carefully consider when choosing PCB design for their products. Therefore, most of the products with large market shipments that year used red PCB and green

PCB or blue PCB version, black PCB can only be seen on mid-to-high-end or top flagship products, so customers should no longer think that black PCB is better than green PCB.