Counterbore hole pcb factory

Countersunk hole is a blind hole machined from the surface of PCB to the interior of PCB. It is often used to install bolts or other connecting parts.

PCB countersunk hole marking

With the development of electronic products to light, thin, short and small, PCB must consider the volume, appearance and flatness of the whole machine in the process of assembling electronic components and designing the whole machine at the client side, which forces the PCB to develop towards higher precision wire layout, lamination and special process design.

In the process of design and manufacture of conventional printed circuit board, in order to achieve and cooperate with the overall volume of the client, it is generally to improve the product stack structure and wiring density to reduce the overall thickness of the circuit board as much as possible. However, limited by the wiring line width, line spacing and layer number, the thickness reduction is limited in the design and manufacturing process.

In general, the printed circuit board (PCB) will be assembled with electronic components after it is delivered to the client. The electronic components are generally attached to the surface of the circuit board, so it will form a bulge, which will increase the assembly volume of the whole machine. Therefore, how to improve the structure of the circuit board and make it smoother has become a technical problem to be solved in the field of PCB processing.