If you have the opportunity to pick up a printed circuit board and observe it alittle, you willfind that there are many large and small holes on the circuit board. Take it up and look at the lamp on the ceiling, and you will find many densely packed small holes. The holes are not placed in a good place, each hole is designed with a purpose. Commonly drilled holes in our printed circuit board(PCB) ...

1. Mechanically controlled depth drilling In the traditional manufacturing process of smt patch multilayer boards, a drilling machine is used to set the Z-axis depth of drilling, but there are some problems: a. Only one can be drilled at a time, and the yield is very low. b. The table of the drilling machine must be level, and the drilling depth of each spindle must be the same. Otherwise, it is d...

1. What is a blind or buried via? A blind or buried via is a through-hole in PCB design used to connect different layers without penetrating the entire board. A blind via connects outer layers to inner layers, whilst a buried via connects only inner layers. Altium Designer supports this type of advanced design. 2. Design Process 3. Stack-up configuration Before commencing PCB design, the stack-up ...