Part 2. Manufacturing Specifications: PCB + PCBA Process
2.1 Material Science, Stackups and Via Architecture
A printed circuit board defined solely by Gerber files is a suggestion, not a specification. With...
2.2 Surface Finishes and Panelization Strategy
The physical interface between the component and the PCB is defined by two factors: the planarity...
2.3 Land Patterns, Spacing and Polarity
A component footprint is not merely a drawing; it is a prediction of how molten solder will behav...
2.4 Process Specs: Alloys, Stencils and Chemistry
Soldering is not applying conductive glue; it is a complex metallurgical process relying on phase...
2.5 Workmanship and Acceptance Criteria
Quality cannot be negotiated after the solder has cooled. Subjective terms like "good enough," "n...