PCB Design Checklist

PCB Design Checklist for less errors
Preplanning
Start with a Simple requirements documents , a simple excel sheet will do ( google sheets with tiny url )
It should cover basic functional requirements ( these can later on be assessed with Verification and Testing )
Unless needed avoid expensive and unkown parts .
Confirm input supply , total power requiremenst , Layout for I/O and dimensions.
Schmeatic Design
All new parts to be double checked for pinout
Create schematic in a frame with different sections broken out , if too big break in pages.
Component rating to be 1.5 the required ratings
Check active compoents for min and max voltages
Make sure engough capacitance is there on output of LDO / Buck
Do not forget decoupling caps
PCB Design

Make sure to have Date and Name for the project

Placement of components is 80% job done so most important

Place in a fixed grid , maing maching placement easy

Minimum 3 fiducials

Use JLC 4 layer as default setup

Are there any Current Resisor ( Make Sure size is correct ) and sections are isolated

Power traces please calculate accordingly

Unless going into a Enclosures , make sure to have mounting holes

Touchpad for all voltages ( small pads will do )

Use SMT unless no other options

Does anything themal management
heatsink if Themal dissapation is high ( space for heatsink )
Bottom vias hemal pad is there / large via
If a pad has to transfer heat avoid themral erliedf around

High speed / Differential lines need impedance matching
avoid vias on these lines
provide solid plances under them

Cannot fulfill current in trace then remove solder mask for solder to increase current.

Avoid right turns and try to group similar signals

Design tools

Trace calculator

JLC Stackup

Impedance calculator

Verification and Testing

Prototypes
Go step by step ,