Classification of about circuit board holes

In the era of rapid development of electronics, PCB board is the basis, because all power devices rely on the circuit board to transmit power and signals .PCB boards are also widely used in the communications industry, consumer electronics, medical and military industries. Let the author take you to understand the PCB board a small step, that is drilling. This hole is not a single hole it is divided into many different holes that have different functions. Let's take a look..

1. Via hole: this is a plate-through hole for inner layer connective, but it is not used for inserting components or other reinforcing materials.

2 blind hole: a conducting hole extending from the printed board to only one surface layer (the outermost circuit of PCB board is connected with the adjacent inner layer by electroplating hole, but cannot see the opposite side), used for the connection between surface and inner layer.

3.Buried hole: a conducting hole that does not extend to the surface of a printed board and is used to increase routing space.

4.Through hole: a hole extending from one surface of a printed board to another surface layer for connecting the wires needed to connect the layers.

5.Element hole: hole for the element terminal to be fixed on the printed board and electrical connection of the conductive graph. These are the holes in the PCB.

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