Electronic PCB Circuit Board Conductive Layer can be set either as a signal layer for wiring or as a planar layer for power or ground. In the process of desigining a PCB, the signal layers are called “positive films” and the planar layers are called “negative films”, which differ in design methods. The positive film…
Since the 1990s, more and more chips have been packaged in BGA (ball array) packages, and as technology continues to evolve, the Pitch (the center distance between solder balls and solder balls) of the package has become smaller and smaller. In this case, the solder balls located in the inner layer of the chip are…
Since the invention of the PCB by the Austrian engineer Paul Eisler in 1936 and its use in radio circuits, the PCB has been widely accepted and rapidly developed by the electronics industry. Originally, PCB Circuit Board Structure was single-sided, and later developed to double-sided, then four layers, and now it has grown to multiple…