source:Industry News release time:2021-12-07 Article author:sznbone Popular:pcb
What are PCB vias? Vias are the most common type of circuit board. When making, you only need to drill holes on the circuit board with a drill or a laser. Although the cost is relatively cheap, some circuit layers do not need to connect these vias.
What is a PCB blind hole: It is called a "blind hole" because it uses a plated hole to connect the outermost circuit of the PCB with the adjacent inner layer, and the opposite side is not visible. There are plugging holes in the PCB circuit layer, and special attention needs to be paid to ensure that the depth of the drilling (Z axis) matches well during the manufacturing process of the holes. Circuit layers that need to be connected to various circuits can also be placed in advance. When layering, you need a more precise positioning and alignment device, because you first need to drill holes and finally glue them together.
What is a PCB buried hole: If it is to connect the internal circuit layer of the PCB without connecting the outer layer, the manufacturing process cannot be realized by drilling after bonding. It must be drilled in a single circuit layer, and part of the internal bonding must be glued first combine. After electroplating, the layers can be completely bonded. The manufacturing process is more labor-intensive than the former two, so the manufacturing cost is also the highest.
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