Judge the quality of PCB from PCB color
First, as printed circuit boards, PCB mainly provides interconnection between electronic components.There is no direct relationship between color and performance. The difference of pigment does not affect electrical properties.The performance of PCB is determined by materials (high Q), wiring design and several layers.However, in the process of washing PCB, black is most likely to cause color difference. If the raw materials and manufacturing process used by the PCB factory are slightly different, the defect rate of PCB will be increased due to color difference.This directly leads to increased production costs.
In fact, the raw material of PCB is found everywhere in our daily life, which is glass fiber and resin.Fiberglass binds to the resin and hardens into a kind of insulating, insulating, and unbending plate, which is the PCB substrate.Of course, the PCB substrate formed by the combination of glass fiber and resin cannot transmit the signal, so on the PCB substrate, the manufacturer will cover the surface with copper, so the PCB substrate can also be called copper clad substrate.
As the circuit routing of black PCB is difficult to identify, it will increase the difficulty of maintenance and debugging in the r&d and after-sales stages. Generally, it will not be easy to use black PCB without the brand of RD(r & d) designer and powerful maintenance team.It can be said that the adoption of black PCB is a manifestation of the brand's confidence in the RD design and late-stage maintenance team. From the perspective, it is also a reflection of the manufacturer's confidence in their own strength.
Based on the above reasons, every manufacturer will consider carefully when choosing PCB version design for products.As a result, most of the products that were shipped in the market in that year adopted red PCB, green PCB or blue PCB version. Black PCB can only be seen in the middle and high-end products or the top flagship products. So don't think that black PCB is better than green PCB anymore