THE 2-MINUTE RULE FOR DOUBLE-SIDED LOW POWER PCB CIRCUIT BOARD

One-sided PCB board: The solder joints are concentrated on a person facet, and components are usually inserted on the other facet. Some products continue to have SMD components on the copper-clad facet. Double-sided board: Either side is often format, and equally might have plug-in components or SMD components.In short, the 4-layer board has an