The actions of this process are relatively uncomplicated, and The real key is to plug the pores and clean the plugged solder mask. Immersion Gold: The gold layer in immersion gold is relatively softer, so immersion gold PCBs can be much less put on-resistant compared to gold-plated PCBs. For sections https://dallaspswxy.qodsblog.com/31281046/5-tips-about-8-layer-thick-copper-power-pcb-you-can-use-today