PCB Defect Pareto Specification: A Factory-Floor Review 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 defect pareto specification from the perspective of a PCBA factory floor, covering…

PCB Defect Pareto Sample: A Factory-Floor Review 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 Defect Pareto Risks: Practical Process Controls 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 Defect Pareto Plan: From Design to Repeatable Production 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 defect pareto plan from the perspective of a PCBA factory…

Fume Extraction: Preparation, Placement and Process Control Fume extraction on a reflow oven removes the flux vapour that the paste releases as it heats, together with the condensate that forms when that vapour cools. Without extraction the vapour condenses on the coolest surfaces inside the oven, which are usually the…

Pot Skimming: Preparation, Placement and Process Control Pot skimming is the removal of the oxide layer that forms on the surface of a molten solder bath, and it is the task that decides how much dross the wave carries onto the boards and how much alloy is lost in a…

Drill Accuracy on a PCB Line: 6 Checks Before a Tight Job Drill accuracy is the ability of a machine to place a hole where the program says it should be, and to do it the same way on every panel. It is not one property but the sum of…

Dispensing Needle: Preparation, Placement and Process Control A dispensing needle is the last few millimetres of the solder paste path, and it is where most dispensing problems start. The paste has to pass through a bore that is only a few hundred micrometres across, and the behaviour of that passage…

Line Changeover: Preparation, Placement and Process Control Line changeover is the interval between the last good board of one product and the first good board of the next, and it is one of the largest hidden costs on an SMT line. It is not only the machine time; it is…

Mask Window: Preparation, Placement and Process Control A mask window is the opening in the solder mask that exposes the copper pad, and its size decides how much bare metal the process leaves around the joint. Too small a window and solder cannot wet the full pad; too large a…