There are many factors that affect the size of the bare pcb board pad. When designing the size of the pad, the range and tolerance of the component size, the need for the size of the solder joint, the accuracy, stability and process capability of the substrate (such as positioning and placement accuracy, etc.) should…
There is a very common process used in the surface treatment of circuit boards, which is called the immersion gold process. The immersion gold process is to deposit a nickel-gold plating layer with stable color, good brightness, flat plating and good solderability on the surface of the printed circuit. During the production, the cost of…
With the development of PCB technology in the direction of high density and refinement, the role of multi-layer pcb boards is becoming more and more important and widely used in various fields. 1. How many layers does a multi-layer pcb board have at most? The PCB board was based on single and double panels at…
