#9 – Manufacturer Friendly PCB Design

PCB design is not just completing the design and sending the files to your manufacturer. While designing it is wise to consider making a manufacturer-friendly pcb and consulting your manufacturer. Otherwise, you might get some complaints from your pcb manufacturer such as:

• Same net spacing;
  >Risk for open circuits.
• Large soldermask openings / small soldermask web/bridge;
  >Risk for short circuits for different nets.
• Placement of via too close to pad;
  >Risk for bad soldering. Solder leakage inside via hole.
• Wrong annular ring/clearance;
  >Wrong annular ring size; risk for weak pad, trace connections. Wrong clearance; clearance is too small, manufacturer is not able to produce pcb etc.
• Consider tear drops;
  >Make robust, strong connections.
• Remove unused pads on inner layers;
  >Redundant pads are not required and removing unused pads are useful to improve polygon/plane for gnd and power.
  
• Small hole size / higher aspect ratio etc;
  >Difficulties for drilling.

Then, wasting of time and checking the files again and again. By clicking the link below, you may read an useful doc related to the points above.
link: Design for manufacture