A double-sided PCB (Printed Circuit Board) is a type of PCB that has copper traces and components on both sides of the board. This allows for more complex circuitry to be created and more components to be added in a smaller space than a single-sided PCB.
Double sided pcb features two sided traces with a top and bottom layer, while single side PCB has a conductive layer on one side of PCB. Double-sided PCB has a higher density without the need for point-to-point soldering since the PCBs can be mount conductive copper and components on both sides of the circuit board.
Double sided printed circuit boards have become more and more popular in the PCB industry. Compare to single-sided PCB, and double side PCB is so complex that it can widely use higher technology electronics, vending machines, power supplies, led lighting, and many more applications.