Stimulated by the difficulties in arranging orders in the supply chain caused by the epidemic in 2020 and the acceleration of the pace of shangyun, the number of orders received by ODM operators is increasing quarter by quarter. Taking the L6 semi-finished products of ODM in the first quarter of 2021 as an example, the [...]
At first glance, PCBs are almost the same on the surface, regardless of their internal quality. It is through the surface that we see the differences that are crucial to the durability and function of the PCB throughout its life. Whether it is in the manufacturing and assembly process or in actual use, PCB should [...]
In PCB layout design, the most common technology is the circuit board grounding, from the most common single analog circuit loop grounding, simple digital circuit loop grounding to analog digital circuit hybrid grounding, from these grounding methods all show the development of electronic design. If the product you design has other requirements, for example, after [...]
Multilayer circuit board is recommended in high speed PCB design. Firstly, the inner layer of the multilayer circuit board is specially assigned to the power supply and the ground, so it has the following advantages: ·The power supply is very stable; ·The circuit impedance is greatly reduced; ·The length of wiring is greatly shortened. In [...]
It is a good method to prepare etching solution with 30% hydrogen peroxide and industrial hydrochloric acid in the ratio of 1:3. However, the matters needing attention and methods in the production are not explained in detail. The following is a supplementary explanation based on practical experience. 1、 Matters needing attention ① In this method, [...]
As for the point of "through hole cover oil" and "through hole window" (the usage of via and pad is distinguished), many customers and design engineers often ask what this means when ordering on the system. Which option should I choose for my document? The following points are explained: There are often such problems. The [...]
The performance of cloud AI chip is relatively strong, and it can support a large number of operations to run together at the same time. In addition, it can also support a variety of different applications such as pictures and voice. In AI chip, the technology based on cloud AI chip can make a variety [...]
There are many types of manufacturing technology for ceramic products in circuit board factory. It is said that there are more than 30 manufacturing methods, such as dry pressing, grouting, extrusion, injection, casting and isostatic pressure. Because the electronic ceramic substrate is of "flat plate" type (block or round sheet) and its shape is not [...]
China is in a good situation of economic construction as the center and reform and opening up. The annual growth rate of electronic industry will exceed 20% % The printed circuit board industry is dependent on the whole electronic industry, which will also rise with the trend, and will exceed 20% % The growth rate [...]
1. What PCB back drill? In fact, back drilling is a special kind of depth control drilling. In the production of multi-layer boards, such as 12 layer boards, we need to connect the first layer to the ninth layer. Usually we drill through holes (once), and then use copper. In this way, the first floor [...]