Multilayer layers HDI PCB, press 3-6 layers first, then add 2 and 7 layers, and finally add 1 to 8 layers, a total of three times.The following is about 8 layers 3Step HDI, I hope to help you better understand 8 layers 3Step HDI.
8-Layers AP7164E Rigid-Flex PCB is mainly used in various products such as mobile phones, digital cameras, tablets, notebook computers, wearable devices and so on. The application of FPC flexible circuit boards in smart phones accounts for a large proportion. Our company can skillfully produce multi-layer fpc, soft-hard combination fpc, multi-layer HDI soft-hard combination board. It has stable cooperation with HP, Dell, Sony, etc.
At high speeds, Impedance control PCB traces are used as transmission lines, and electrical energy can be reflected back and forth, similar to the situation where ripples in lake water encounter obstacles. Controlled impedance traces are designed to reduce electronic reflections and ensure correct conversion between PCB traces and internal connections.