Circuit board warpage will cause inaccurate positioning of components; When the board is bent on SMT and THT, the pins of components are not perfect, which will bring many difficulties to assembly and installation. Ipc-6012, SMB–SMT circuit board of the maximum warpage or distortion 0.75%, other board warpage is generally not more than 1.5%; Electronic … Continued
Via-connection channel of double-layer board This is the most confusing part before. When you get a PCB, you will find that there are many small holes with the size of the needle tip. This is the via. Its structure is as follows. The function of the vias is mainly to connect the copper wires on … Continued
Copper Clad Laminate grades FR-4 A1 grade copper clad plate this grade is mainly used in military, communications, computers, digital circuits, industrial instruments, automobile circuits and other electronic products. The quality of this series of products has reached the world first-class level, which is the highest grade and best performance products of our company. FR-4 … Continued
PCB boards characteristics can be introduced from 3 respects as below: 1-1.Periodicity With the development of electronic information industry, PCB boards industry downstream application fields are also more and more diversified, applications involving communications electronics, consumer electronics, computer, automotive electronics, industrial control, medical equipment, defense and aerospace, etc. all of the social economy, so the PCB … Continued
PCB production process, that is, printed circuit board production process. Almost every electronic device, ranging from electronic watches and calculators to large computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, printed boards are used for the electrical interconnection between them. In a larger electronic … Continued
Printed wiring board is also referred to Printed Circuit Board short for PCB, originally made from USA and now 70% more produced in China. There are many kinds of printed wiring board products, which can be classified by substrate material, conductive graphic layer, product performance, application field and other dimensions. According to the substrate structure, it … Continued
Layout design In the PCB design, special components refer to the key components of the high-frequency part, the core components in the circuit, the components that are susceptible to interference, the components with high voltage, the components with high heat generation, and some heterosexual components , the position of these special components needs to be … Continued
With microprocessor and signal conversion and transmission device running speed increase, digital circuit running speed also reached a higher level: 100Gbps. High-speed signal requirements will not be met using a generic PCB board, and the board material will determine the performance of the product. PCB board selection must meet the design requirements, mass production and … Continued
The design of the printed circuit board is based on the circuit schematic diagram to realize the functions required by the circuit designer. The design of the printed circuit board mainly refers to the layout design, and the layout of external connections needs to be considered. Various factors such as optimal layout of internal electronic … Continued
The meanings and characteristics of these three holes for circuit board. Conducting holes (VIA), a common type of hole used to conduct or connect copper foil lines between conductive patterns in different layers of a circuit board. For example (such as blind holes, buried holes), but can not insert component lead legs or other reinforced … Continued
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