UART Serial Interface Circuit Design A UART is the simplest way to move data between two devices: one wire each way, no clock, and a frame defined only by the timing of the bits. That simplicity is also its weakness, because both ends must agree on the rate and both…

Solder Paste Abandon Time and Stencil Dwell Control Solder paste begins to change the moment it is spread across a stencil. Solvent leaves the surface, flux absorbs water from the air and the paste stiffens as its structure rebuilds. Abandon time is the industry term for how long paste can…

PCB Antenna Design: Sizing, Ground And Tuning An antenna printed directly on a circuit board looks like a simple piece of copper, and behaves like something far less predictable. Its performance depends on the board it is printed on, on what surrounds it in the finished product, and on how…

ESD Control on the Assembly Floor: Wrist Straps and Beyond ESD control on an assembly floor is a programme rather than a piece of equipment, and the parts of it that fail are almost never the parts that cost the most money. A wrist strap that is worn but not…

PCB Exposure Energy Setting: The Light That Defines 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 exposure energy setting from the perspective of a PCBA factory floor,…

PCB Via Design Optimization and Corner Crack Prevention for Thermal Shock Thermal shock is one of the key failure causes faced by high-reliability PCB during service. Especially in application scenarios such as aerospace, new energy vehicle electronic control systems, and 5G base station RF modules, PCB must frequently withstand transient…

PCB Pattern Plating Thickness: Building the Traces Up 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 pattern plating thickness gives you a practical advantage when…

PCB Panel Plating Uniformity: Even From Edge to Edge 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 panel plating uniformity from the perspective of a PCBA factory…

Aqueous Cleaning of Assemblies: Chemistry, Rinse and Drying Cleaning an assembly after soldering is a chemistry problem with a mechanical solution, and the failure mode when it goes wrong is residue left in a place nobody can see. The measurement that settles the question is ionic contamination, and it is…

Ceramic Substrate Or Aluminium: How To Choose When a circuit has to get heat out of a small area, the choice of substrate becomes one of the first decisions rather than one of the last. Aluminium and ceramic boards both solve the problem, but they solve it differently, and the…