There are many silk screen letters on the PCB, such as R109, c113, Q105, d206, etc. What do these letters / numbers mean? The letters on the PCB board represent the abbreviation of electronic components, and numbers often follow the letters, which are also meaningful. The Letters on PCB Board PCB Alphabet Meaning Table Letter Representative …
What is The Meaning of Silk Screen on PCB Board? Read More »
What is Impedance Circuit Board? For PCB factories, boards with impedance lines are commonly known as impedance boards. The follow image is one of the common impedance boards. Generally, impedance is only made for high-speed boards, and the line width tolerance of impedance lines should be controlled to 5%-10% in the production process, while the tolerance …
How to Select The Process When Placing an Order for PCB Impedance Board? Read More »
Drilling is a very important part in the manufacturing process of PCB. The quality of drilling greatly affects the functionality and reliability of PCB. However, many customers still don’t know the meanings and characteristics of the through holes, blind holes and buried holes in high-density HDI boards. Let’s have a look. Vias First of all, …
The development of electronic industry promotes the development of PCB, and also puts forward higher requirements for PCB manufacturing process and surface mount technology. The plug hole technology came into being. The plug hole of PCB circuit board is generally placed on the second layer with ink after the anti welding layer, so as to …
With the gradual development of PCB technology in China, the share of multilayer boards (especially high-level products) in our enterprises is becoming more and more important. While developing and producing these products, we always encounter the problem of short circuit to ground caused by expansion and contraction, alignment deviation and lamination deviation, which has been …
Accurate Measurement Method of Lamination Offset of Multilayer Board Read More »
Because the manufacturing process of printed circuit board is complex and the process is cumbersome, there are many quality defects in its manufacturing process, which seriously affects the quality of the final product. In order to reduce the unqualified rate of PCB and effectively control the quality defects in the production process, the main quality …
Analysis of Main Quality Defects of PCB: Short & Open Circuit Read More »
Rigid-flex Board Layer: 1, 2 & mulit-layerShipping WayEconomy Express, Standard Express, Priority ExpressCost: Factory priceLeading Time：5-15 daysProduction requirements: According to documentsStandard: International standards Email Us Get a Quote Introduction Applications Advantages Disadvantages Introduction Rigid-flex board is a new product of the birth and development of FPC and PCB. It is combined flexible circuit board and …
The basic concept of the rigid-flex PCB board has been proposed in the patent at the beginning of this century. In 1947, the American Aviation Administration and the American Bureau of Standards initiated the first technical seminar on printed circuits. At that time, 26 different printed circuits manufacturing methods were listed. It is summarized into …
The Origin and Development History of Rigid-flex PCB Board in China Read More »
With the continuous expansion of the market demand for portable electronic products, electronic devices are becoming more and more light, thin, short, small and multifunctional. In particular, the application of flexible board for high-density interconnect structure (HDI) will greatly promote the rapid development of flexible printed circuit technology. At the same time, with the development …
What’s a Circuit Diagram? A circuit diagram refers to a diagram showing circuit connections with circuit element symbols. Circuit diagram is a kind of principle layout diagram which is drawn with standardized symbols of physical electricity to represent the composition and relationship of components for the needs of research and engineering planning. The working principle …
