PCB MES Data Flow in the Shop: Practical Process Controls Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB MES data flow in the shop gives…

PCB Drawing and Document Control: One Source of Truth A PCB drawing is only useful when it is the drawing the line actually runs. Two copies of one revision, one on a server and one at the machine, create doubt at the worst moment. Document control fixes that doubt by…

PCB Design Guidelines That Make Boards Manufacturable Most layout mistakes are not made because the rules are unknown. They are made because the rules are applied only to the parts of the board that the designer is thinking about at the time, and the rest is drawn by habit. Guidelines…

PCB Gerber Revision Control: What Buyers and Engineers Should Check Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This…

PCB Bill of Materials Version Control: Design, Process, and Quality Notes Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB bill of materials version control gives…

PCB Layout Decisions That Affect Production Layout is usually optimised for electrical performance, and then handed to manufacturing with the expectation that it will be built as drawn. In practice a board that is electrically excellent can still be expensive to produce, difficult to assemble and unpredictable in yield, and…

PCB Dimensional Stability and Expansion Control A printed circuit board is a laminate of materials with different thermal and mechanical properties, pressed together under heat and then subjected to a series of wet processes and thermal cycles. Each of those steps changes the dimensions of the panel, and the accumulative…

Electroplating Via Filling Process for HDI Boards As devices became denser, the holes that connect their layers became smaller, and once a hole is small enough that conventional plating cannot coat its walls uniformly, the process has to change. Instead of coating the barrel, the hole is filled completely with…

Placement Order and Pad Positioning in PCB Layout Placement is the half of layout that decides how difficult the other half will be. Two engineers can route the same schematic into boards with the same component count, and one will finish in a week while the other fights for space…

PCB Engineering Change Order Process: Process Details and Inspection Points Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB engineering change order process from the perspective of a…