The top 5 PCB design guidelines to improve manufacturability, functionality, and reliability:

1. Fine-Tune Component Placement

2. Power, Ground & Signal Traces

• Where to Place Power and Ground Planes

• Routing Guidelines for PCB Layouts

• Defining Trace Widths

3. Keep Things Separate

• Grouping Components

• Separating High-Power Components

4. Minimize Heating Issues

• Thermal Relief Connections to Planes for Through-Hole Components

5. Verify Your Layout Against Your PCB Design Rules

• Rounding Out Your PCB Board Design & Layout