PCB AOI Specification: Writing It Down Precisely 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…

PCB AOI Timing: How Long It Takes 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 timing from the perspective of a PCBA factory floor, covering timing…

Gold Finger: Design Rules and Process Limits The gold fingers on a plug in card are a row of plated contacts along the board edge, and the chamfer at the leading corner is the feature that guides the board into its socket. The chamfer and the contacts are close together,…

PCB AOI Maintenance: Keeping It Working 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 maintenance gives you a practical advantage when you choose a…

Stencil Area Ratio and Solder Paste Release Control The area ratio of a stencil aperture is the area of the opening divided by the area of its walls. It is a simple geometric number, and it predicts, with surprising accuracy, whether solder paste will release from the aperture or stay…

Backdrilling To Remove Via Stubs A plated through hole connects the layers it passes through, but it also continues past the last layer it serves and ends at the far side of the board. That unused length is the via stub, and at high frequency it behaves as an open…

PCB AOI Limits: Where the Edges Are 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 limits from the perspective of a PCBA factory floor, covering understanding…

PCB AOI Plan: Laying It Out First 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…

PCB AOI Data: What the Numbers Say 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 data from the perspective of a PCBA factory floor, covering reading…

Engineering Change Management in PCB Production An engineering change is a decision to make the product different, and change management is the work of making sure the difference reaches every place it needs to reach. In a board shop a change rarely stops at the drawing. It moves through the…