PCB Design Tips
Here are some simple PCB design guidelines that can help you create better board layouts.
Board size: There are always limits to how big your board can be, how thin your traces can be and the smallest drill size you can use. You can visit your PCB manufacturers’ website to check their capabilities. You should keep those data in your mind when you design a new board
Trace width: It must be at least the size of the smallest allowed trace width, but should generally be thicker because thin traces are more vulnerable to damage when soldering. The more current that is going to flow through the trace, the thicker it should be.
Placement of components: Place your components in a similar way is easy for you to troubleshoot your circuit. When place your components, pay great attention to your large components and connectors.