PCB Heavy Copper Etching Issues: What Matters on the Production Line 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.…

Via Design in High-Speed PCB Layout: Parasitics and Stubs A via looks like a simple connection between two layers, and electrically it is anything but simple. Every via adds capacitance to the net it joins, adds inductance to the return path around it, and creates a stub that reflects energy…

PCB Board Thickness Tolerance Control: 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 board thickness tolerance control gives you a practical advantage…

PCB Layer to Layer Registration: From Design to Repeatable Production 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 layer to layer registration gives you a…

PCB Stackup Symmetry Rules: Practical Process Controls 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 stackup symmetry rules from the perspective of a PCBA factory floor, covering…

PCB Loss Tangent Test Method: How Much the Material Eats 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 loss tangent test method from the perspective of a…

PCB Prepreg Storage Life: What Buyers and Engineers Should Check 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 prepreg storage life from the perspective of a PCBA…

PCB Lamination Wrinkles and Resin Flow: 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 lamination wrinkles and resin flow gives…

5 Key Stages of PCB Prototype Manufacturing Almost everyone who works with electronics knows what a printed circuit board is, and far fewer know how one is actually built. Modern boards are constructed with a pattern plating process, in which copper is plated onto the areas that will become conductors…

OSP Surface Finish: Process and Protection Copper oxidises. A bare copper pad that has been exposed to air for a few days will not wet properly when solder is applied, and the resulting joint is weak and unreliable. Preventing that means covering the copper until the moment of assembly, and…