Ten Common problems in PCB Design
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Oct 18.2018, 17:35:19
I. overlap of pads. 1. The overlap of the pads (except the pads on the surface) means that the overlap of the holes in the drilling process will cause the drill bit to break because of drilling many times in one place, resulting in the damage of the holes. 2, two holes overlap in the multilayer board, such as one hole position is the isolation disk, the other hole position is the connection disc (the flower soldering pad), after drawing the negative in this way, it appears as the isolation disk, which causes the scrap. II. Abuse of graphics. 1, in some graphics layer to do some useless line, was originally a four-layer board but designed more than five layers of lines, so that cause misunderstanding. 2. It is easy to design. Take Protel software as an example, Board layer is used to draw the line of every layer, and Board layer is used to mark the line. In this way, when the light drawing data is carried out, because the Board layer is not selected, the line is missed and the...