It’s all too easy to design something that cannot be built or will not function properly once it is built. Here are some PCB file errors to be on the lookout for:
- Drill Size – If drill holes are smaller than required, there will obviously be problems. If holes are too large, component mounting might not be possible or might require excessive soldering.
- Overlapping Drills – Overlapping can break the drill, resulting in an unusable section of the panel. Re-designing and re-drilling will cause unnecessary delays.
- Edge Tolerances – Ground planes and circuit traces that are too close to the edge of the board, or to openings, could cause accidental shorting with metal chassis and cases.
- Solder Resist Pads – Sometimes the solder resist layers contain extra pads or have missing pads as a result of design errors. Extra pads can result in exposed traces and other problems, so it is important to catch these errors prior to manufacturing.
- Incorrect Landing Patterns – PCB design software contains libraries of commonly used electronic components, which include both the schematic symbol and the landing pattern of the PCB. Using components not in the libraries requires the engineer to draw them manually. The result can be mistakes in the landing pattern. Less than a fraction of a millimeter’s difference in pin spacing can make soldering the part on the board impossible.