Pcb Design Rules

Written by Serena Berger
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There are some general rules to which you should try to abide when designing printed circuit boards. These may vary, however, depending on the equipment which you are using to construct the boards. For example, the maximum size of the PCB that you can use varies with the fabricator that you are using.

Also, the materials that you are using will determine the minimum distance between wires that can be placed on the board. With any process used to create printed circuit boards, the precision of the equipment used in fabrication will determine the minimum width of a trace as well as the minimum distance between two traces on the board. If you were to manufacture a board in which you had specified a distance between two traces that was less than the precision of the manufacturing equipment, it might short.

Drilling Holes Affects the Cost of PCBs

In terms of the cost, the number of holes that must be drilled will affect how expensive it is to manufacture the PCB. Some manufacturers charge you based on the number of different drill sizes that must be used. Also, thicker boards will usually be more expensive because producing them takes a greater toll on drilling equipment.

You should carefully consider how many layers any PCB will have. More complicated circuits might require a two-layer or multi-layer PCB, but obviously they will also be more expensive to produce. Because manufacturing costs are higher with multi-layer boards, it is more crucial to check your design before fabricating it. You should follow each trace on your design to make sure that nothing is missing or incorrectly connected, as repair or modification is so expensive that any large quantity of PCBs manufactured with a significant flaw will probably have to be discarded altogether.


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