Coating Cure Verification Methods A conformal coating that has not fully cured does not protect the assembly, and it looks the same as one that has. Cure verification is the measurement that separates the two, and it is the check that is most often replaced by a touch test. Why…

First Article Inspection and Its Record A first article is the first board of a run inspected completely, and its purpose is to confirm that the process, the documentation and the design agree. It is the cheapest point at which a setup error can be found, and it is only…

PCB Oven Zone Handover: Passing It On 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 oven zone handover from the perspective of a PCBA factory floor, covering…

PCB Oven Zone Timing: How Long It Takes 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 Oven Zone Traceability: Following One Board 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 oven zone traceability gives you a practical advantage when you…

PCB Oven Zone Environment: Where It Happens 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 oven zone environment from the perspective of a PCBA factory floor, covering…

PCB Shop Humidity Records: Writing It Down 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…

Via Tenting: Preparation, Placement and Process Control A via that passes through a solderable area has to be dealt with. The two standard answers are tenting, where solder mask is printed over the hole, and plugging, where the hole is filled with a material before the mask is applied. The…

Copper Balance: Design Rules and Process Limits Inner layer copper is rarely uniform, and that is a design decision as much as a manufacturing one. Where one area of a layer is solid copper and the next is bare laminate, the board behaves differently under heat, under lamination pressure and…

Obsolescence: Preparation, Placement and Process Control Every component on a board has a life that is decided by its maker rather than by the product it sits in. A part that is perfectly good in service can be discontinued because the wafer fab moved on, the package fell out of…