Printed Circuit Boards (PCB) are the boards located inside of your computer. Made up of fiberglass, composite epoxy and other materials, the PCB acts as a wiring area for the inner workings socket components. In simpler terms, the PCB is the area where your electronic device can use conductive tracks, pads and other features to connect its inner electrical components.They are used in computers, as well as in cell phones, medical technology, and other electrical devices. There are many type of PCBs, several of which consist of a single layer, but there are many different types, some of which have more sophisticated hardware like graphics cards or motherboards attached to them. Below you can read about the many available types of PCBS in the market.
A single layer PCB is, as its name indicates, consists of one layer of base material, one side of which is coated with a thin layer of copper or other metals. After the metal coating is applied, a solder mask, followed by a silk screen cover as a way to identify all of the elements on the board. Unlike other PCB boards, the single layer kind have their components and circuits applied solely to one side of the board. These types are generally more affordable than their counterparts and are more commonly used for calculators, cameras, radio and stereo equipment, solid state drives, printers and power supplies.
Double-layered PCB boards have a copper base material applied to both sides of the board, with holes drilled through to allow the circuits on one side to connect with the circuits on the other side. With this through hole, small wires, known as leads, are fed through the holes, with each end of the leads then soldered to the right component. Double sided PCBs are typically used for power supplies, HVAC systems, dashboards, amplifiers, vending machines, and other instrumentations.
Multi-layer PCBs are made up of multiple double layered PCBs. Each board in these layers is fastened with a specialized industry glue and sandwiched between pieces of insulation to ensure that excess heat doesn't melt any of the components. Some multi-layer PCBs only have 3 layers, while others can have as many as 50. These types of PCBs, usually very thick, can often run a broad range of complicated tasks for data storage, GPS technology, satellite systems, weather analysis and more.