SPI and AOI Data Correlation for Process Control on SMT SPI measures the paste before placement and AOI inspects the joints after reflow, and the two systems together describe the process from end to end. Used separately they answer single questions; used together they allow a defect to be traced…

PCB AOI Selection: Choosing What Fits 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 AOI selection from the perspective of a PCBA factory floor, covering selecting AOI…

Thermal Relief Spoke Design For Soldering A thermal relief is a pattern of narrow spokes that connects a pad to a surrounding copper plane. It exists because a pad that is connected to a plane by solid copper conducts heat away so effectively that the joint cannot be soldered: the…

PCB AOI Risks: What Could Go Wrong 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 article explains PCB…

Panelization Spacing and Rail Width Rules for Assembly A panel is a carrier for a group of boards, and every dimension on it exists to serve the machines that will process it. The rail that the conveyor grips, the gap between the boards, the position of the fiducials and the…

Countersink And Counterbore In PCB Design A countersink is a conical recess machined into a hole so that a flat head screw sits flush with the surface. A counterbore is a cylindrical recess that lets a socket head screw or a nut sit below the surface. Both are mechanical features…

5S Workplace Organization in a PCB Shop 5S is a workplace organization method with five steps, and in a board shop it produces three practical results rather than a tidy appearance. Setups get shorter because tools and materials are where they are needed, faults become visible because deviations are obvious,…

Energy Cost Management in PCB Manufacturing Energy cost in a board shop is a process cost that behaves like a utility bill, and the two facts together explain why it is usually managed badly. It is large enough to matter, it is spread across many pieces of equipment, and no…

PCB AOI Review: A Second Look 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 AOI review gives you a practical advantage when you choose a…

PCB AOI Handover: Passing It On 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 AOI handover gives you a practical advantage when you choose a…