Single-sided PCB board: The solder joints are concentrated on one aspect, and components are frequently inserted on the other facet. Some products nevertheless have SMD components within the copper-clad facet. Double-sided board: Both sides is usually layout, and both of those can have plug-in components or SMD components. It is https://metal-pcb-copper-based-bo62715.blog-a-story.com/11572823/four-layer-inner-and-outer-layers-2oz-copper-thick-pcb-circuit-board-things-to-know-before-you-buy