Multilayer-pcb

WHAT IS MULTILAYER PCB，WHAT ARE THE CHARACTERISTICS?

PCB multilayer is a multilayer circuit board used in electrical products. Multilayer boards use more single or double panel wiring boards.With a double lining, two one-way for outer layer or two double lining, two blocks of single outer layer of the printed circuit board, through the positioning system and alternate insulation adhesive materials and conductive graphics interconnection according to design requirement of printed circuit board becomes four, six layer printed circuit board, also known as multilayer printed circuit board.

With the continuous development of SMT (surface mounting technology) and the continuous introduction of new generation OF SMD (surface mounting devices), such as QFP, QFN, CSP, BGA (especially MBGA), electronic products have become more intelligent and miniaturized, thus promoting the major reform and progress of PCB industrial technology.Since IBM first successfully developed high density multilayer (SLC) in 1991, various groups in various countries have also developed various high density Interconnection (HDI) microorifice plates.With the rapid development of these processing technologies, PCB design has gradually developed to the direction of multi-layer and high-density wiring.With its flexible design, stable and reliable electrical performance and superior economic performance, multilayer PCB has been widely used in the production and manufacturing of electronic products.

The biggest difference between MT PCB Assembly and single panel and double panel is the addition of internal power layer (maintaining internal power layer) and ground layer. The power and ground network is mainly wired on the power layer.However, multi – laminate wiring is mainly based on the top and bottom layer, supplemented by the intermediate wiring layer.Therefore, the design method of multilayer board is basically the same as that of double panel, and the key lies in how to optimize the wiring of internal electrical layer, so that the wiring of circuit board is more reasonable and electromagnetic compatibility is better.