Mistakes Most People Make with PCB Layouts
It’s not easy to design a PCB for the first time. Myriad pitfalls await the unsuspecting designer on their first project. Here’s a list of a few of these, as well as how to overcome them.
Failure to Determine Operational Requirements:
Sometimes, new designers don’t pay enough attention to this aspect of the process, along with how much having a good handle on these requirements can help with the choice of materials and component spacing. An example might be that a material that does not perform well under all operational requirements of the PCB may need to be shielded in order to perform adequately. In addition, low-cost circuit boards are fabricated with materials that simply can’t stand up to environmental extremes. This weakness may reveal itself in the failure of the board if it operates at hot or cold temperatures for too long.
Get additional PCB layout tips.
Not Enough Space Between Components:
Initial PCB layout designs may fail to leave enough space between components for the traces to fit properly. Traces carrying more current are going to be wider and may not fit in a spot where a standard trace would. If there isn’t enough room in the layout for these traces, it will need to be redesigned.
Automated Design Isn’t Always Better:
Though PCB layout software has come a long way in the past 10 years, it’s very easy for a beginner to design a nonfunctional PCB this way. For initial designs, a pen and paper is sometimes a better method. However, newer software includes comprehensive analysis tools specifically designed to catch common problems and allow the designer to fix them before the file is sent to the manufacturer.
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