3W principle in PCB Design In the PCB design, in order to reduce the crosstalk between lines, the line spacing should be large enough. When the line center spacing is not less than 3 times the line width, most of the electric fields can be kept from interfering with each other. This is the 3W … Continued
As an important link in hardware design, PCB Layout is an absolutely important index affecting performance when the hardware circuit design is reasonable. Many PCB Layout engineers complete the Layout and wiring according to the constraint rules given by hardware engineers or PI SI engineers. These are commonly known as “wire pullers”. After a period … Continued
To measure the technological level of a circuit board manufacturer, the first thing that comes to mind is the number of layers of the production and processing circuit board. So the multi-layer circuit board is more strict in the process of production. The multi-layer circuit board needs to sink copper in the hole, so that … Continued
When designing flexible circuit boards, have you encountered troubles in choosing solder masks and overlays? The solder mask and the cover layer have the same basic insulation function. Do you know the difference between the solder mask and the cover layer? Can the solder mask and the cover layer be overlapped for insulation? Do you … Continued
Recently, many customers asked me, what does the flexible circuit board mold include? And why do we need to open the mold? How many types of molds are there for flexible circuit boards? How to choose a suitable mold for flexible circuit boards? Today, let us understand the flexible circuit board mold together. FPC molds … Continued
Assembling components on FPC flexible circuit boards is required, as the smart wearable industry becomes more and more popular, due to the limitation of assembly space, surface mounting of SMD on FPC has become one of the development trends of SMT technology. However, FPC is more difficult to assemble than PCB because it is not … Continued
China PWB has many advanced equipments, and it is difficult for Chinese engineers to understand english. Here we will translate some main machine name for easy study. China PWB equipments name 自动外观检测仪 Automatic PCB visual inspection machine检孔机 Hole inspection machine离子污染测试仪 Ionic contamination tester电测 e-test低阻四线飞针测试仪 High Speed Fly Probe TesterAOI 检测 AOI inspection 板料仓库 board material … Continued
High Density Interconnect PCB High Density Interconnect PCB, is a well-known concept you need to know about. It is an important so you need to learn about(HDI PCB) and its benefits ASAP. Key HDI advantages The evolution of excessive-density pcb generation has given engineers more design freedom and flexibility than ever before. Designers use HDI methods … Continued
Printed Circuit Board Design, which is the first step to change your concept into a real PCB. This job seems to be a complex work and needs more patience and more experienced engineers to finish it. In gereral, there seems to have 11 steps for the PCB designers to reference when they are ready to … Continued
How can we identity the number of PCB layers? It is something relates to our quotation, our production process, the lamination and and final quality. It is one of the basic skills that we need to handle. Here are some methods for you to use to count the number of layers as below: The First. … Continued
Electronic circuit design and schematic diagram creation.The schematic diagram cleary shoes how the value of knowledge evolved in china in the past 50 years. Come and design your own PCB! If you really want design your pcb,there are some comment: choose a computer assistant design safe to use in PCB design. Reference other people … Continued
The reason and solve for PCB films deformation The reason : (1) The temperature and humidity is out of control . (2) The exposure machine’s temperature is very high . The solve ways , (1) In general ,the temperature should be controlled under 22±2℃,and humidity should be controlled under 55%±5%RH (2) Using the clod light or the … Continued