High Precision PCB Base Material: What HDI Really Needs A high precision pcb is defined by its geometry rather than by their marketing: fine lines and spaces, small microvias and a construction that can support them. The base material is what makes that geometry possible, and the parameters that matter…

Press-Fit Pin Insertion Force and Plated Hole Control A press-fit joint replaces solder with mechanical interference, and the whole connection depends on dimensions that are measured in tens of micrometres. The compliant pin must deform enough to grip the barrel, the plated through hole must be tight enough to hold…

PCB Trace Inductance: The Opposition to Change 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 trace inductance from the perspective of a PCBA factory floor, covering estimating…

Rework Practice and Heat Control on Assembled Boards Correcting a defect on an assembled board is a repair, and the difference between a repair that lasts and one that returns is the control of heat. The techniques differ, and the same technique applied without control produces damage that appears later.…

PCB Pad Parasitic Capacitance: What the Pad Adds 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 Trace Capacitance: The Charge a Track Holds 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 trace capacitance from the perspective of a PCBA factory floor, covering…

PCB Impedance Control And The TDR Test Report Once a board carries a controlled impedance line, somebody has to prove that the value was met, and on anything faster than a low speed design that proof is a measurement rather than an assurance. The tool used for the measurement is…

PCB Differential Pair Impedance: The Number the Pair Must Hold 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 differential pair impedance gives you a practical…

PCB Single Ended Impedance: One Track, One Number 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 single ended impedance from the perspective of a PCBA factory floor,…

Solder Ball and Bump Height Control in BGA Assembly Solder ball geometry is one of the most closely watched characteristics in modern BGA assembly. Every ball has to carry the right volume, sit at the right height, and hold a narrow window from reflow through final test. When bump height…