Corresponding inspections are required before and after the complete PCBA processing is completed. So, how to effectively inspect after SMT chip processing? 1. Check the layout of the pcb module board for foreign matter residues, PCB scratches and other undesirable phenomena. 2. The inspection direction is moved from left to right and from top to…
When customers customize PCB products, they will produce more in quantity to prepare for they pcb projects. Over time, the PCB board will expire. So, what are the hazards of using expired PCB circuit boards? 1. Expired PCB fabrication may cause oxidation of surface pads Oxidation of the solder pad will cause poor soldering, which…
With the continuous development of the electronics industry, the technical level of PCB boards is also constantly improving. Common processes mainly include tin spraying, immersion gold, gold plating, OSP, etc. In fact, tin spraying is divided into lead-free tin spraying and lead spraying tin, so what is the difference between them? 1. From the surface…
