The rigid flex board of the camera module is a type of rigid-flex board that is very difficult to process. The main reason is that the gap between the COB PAD window and the COB PAD of this type of rigid flex board is very small (usually between 2mil-3mil), and the surface treatment of this […]
Category Archives: Technical Knowledge
The cause of the expansion and contraction of the rigid flex PCB is determined by the characteristics of the material. To solve the problem of expansion and contraction, we must first introduce the polyimide material of the flexible board. Polyimide material (1) Polyimide has excellent heat dissipation performance and can withstand the thermal shock […]
Rigid flex board means that in PCB proofing, the flexible circuit board and the rigid circuit board are pressed together according to relevant process requirements to form a circuit board with FPC characteristics and PCB characteristics. Its price is relatively high, but it is extremely useful Extensive and can be tailored for applications in many […]
Since its inception in the 1960s, surface mount technology (SMT) has entered a fully mature stage after more than 40 years of development. It has not only become the mainstream of contemporary circuit assembly technology but also continues to develop in-depth. General development trends of surface mount technology The components are getting smaller and smaller, […]
Surface mount technology is developed from the manufacturing technology of component circuits. From the 1970s to the present, the development process of SMT has gone through three stages: The first stage (1970 to 1975): The main technical goal is to apply miniaturized chip components in the production and manufacture of hybrid circuits (called thick film […]
Over the past ten years, the rapid development of electronic application technology has shown three notable characteristics. (1) Intelligence Convert the signal from analog to digital, and process it with a computer. (2) Multimedia The transformation and development from textual information exchanges to sound and image information exchanges, making electronic equipment more humanized, deeper into […]
The most basic purpose of PCB surface treatment is to ensure good solderability or electrical properties. Since copper is easily oxidized in the air, and the copper oxide layer has a great influence on welding, if the copper layer is oxidized, it is easy to cause false soldering and virtual soldering. In severe cases, the […]
With the birth and development of FPC and PCB, a new product Rigid Flex PCB was born. The rigid flex board is a circuit board with FPC characteristics and PCB characteristics, which is formed by combining the flexible circuit board and the rigid circuit board according to the relevant process requirements, and through processes such […]
In high speed PCB design, we often encounter various problems, such as impedance matching, EMI rules, etc. This article has compiled some key questions and answers related to high-speed PCB design for everyone, and we hope it will be helpful to our readers. 1. How to consider impedance matching when designing high-speed PCB schematics? When […]
In general, the laminated design mainly follows two rules: 1. Each wiring layer must have an adjacent reference layer (power or ground layer); 2. The adjacent main power layer and ground layer should be kept at a minimum distance to provide a larger coupling capacitance; The following lists the stack from two-layer board to […]
