94V0 RoHS Printed Circuit Board PCBA Assembly

Why are PCB boards important?

The printed circuit board (PCB) is the basic component of almost every electronic industry. In the early days, PCB proofing was a slow conventional method. As technology advances, the process becomes faster, more creative, and even more complex. Each customer requires specific changes to the PCB within a specific time limit.

The interconnection of various modules in electronic equipment often requires the use of a printed circuit board socket with spring contacts and a printed circuit board with connecting contacts designed to match it. These contacts should have a high degree of wear resistance and very low contact resistance, which requires a layer of rare metals to be plated on them. The most commonly used metal is gold. In addition, other coated metals can be used on the printed lines, such as tin plating, plating, and sometimes copper plating in certain areas of the printed lines.

Another type of coating on the copper printed wire is organic, usually a solder mask, where there is no need for soldering, screen printing technology is used to cover a layer of epoxy resin film. This process of applying a layer of organic solder protection agent does not require electronic exchange. When the circuit board is immersed in the electroless plating solution, a nitrogen-resistant compound can stand on the exposed metal surface and will not be absorbed by the substrate. .

The precise technology required by electronic products and the strict requirements of environmental and safety adaptability have promoted considerable progress in electroplating practice. This is clearly reflected in the manufacturing of high-complexity, high-resolution multi-substrate technology. In electroplating, through the development of automated, computer-controlled electroplating equipment, the development of high-complex instrument technology for chemical analysis of organics and metal additives, and the emergence of technologies for precise control of chemical reaction processes, electroplating technology has reached a high level. s level.