Design for Manufacturing (DFM) is about making choices that help your PCB factory build your board correctly the first time. Most production problems come from design decisions, not factory mistakes.
Top DFM issues
- Copper too close to board edge
- Missing board outline
- Silkscreen overlapping solder pads
- Non-standard hole sizes without notes
- Impedance requirements without stackup data
Simple rules that prevent most problems
- Keep copper 0.3mm from board edge
- Always include a board outline layer
- Keep silkscreen off pads
- Use standard hole sizes when possible
- Provide stackup requirements for 4+ layers
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