Product Description: Double-Sided Printed Circuit Board A Double-Sided Printed Circuit Board (PCB) is a double-layer printed wiring board which is commonly used in electronic devices. It is composed of two thin layers of copper foil which are bonded together. The two layers are separated by an insulating substrate. The two layers are connected by plated through-holes, which allow for the connection of components. The Double-Sided PCB offers a range of features and benefits