3 Tips for PCB Design
Printed circuit board design is very tedious work. Even minor point should be carefully considered to make sure that the PCB is defect free. The PCB layout tends to fail when soldering components on it. There are some checks that can be used to ensure that the PCB layout is perfect without any flaws. Below are the top 3 checks which you can perform for designing your PCB.
Avoiding vias near SMT pads
Be careful when placing vias in your PCB design, especially the hole is not hidden. When you place vias near the SMT pads, it will give you obstacles when you want to solder components. There should be a distance of at least 0.25" between SMT edges and vias. The vias must be masked over as well.
No routing of traces near SMT pads
The routing of the trace should be located at the middle between the SMT pad and edge. Most PCB design software allows gaps, while others do not allow these gaps. This routing may cause traps when you are etching the PCB layout. In some cases, the PCB layout might pass the checks and tests of continuity but the PCB will fail when you solder components on to it.
The routing of traces must be about 90 degrees or above
This is one of the most important checks in PCB design process. You should never route any trace less than 90 degrees. The traces with angles lower than 90 degrees can cause certain problems such as improper path and might fail after you solder components. You have to use the multiple segments method whenever you are required for the double-back for completing a specific connection.