PCB, also known as printed circuit board, is used to electrically connect electrical components through the use of conductive pathways as well as signal traces. These will have to go through the recording of copper sheets that have been laminated to be a non-conductive substrate. A certain PCB filled with electronic components is referred to as a printed circuit board assembly or, soon, PCB assembly. PCBs generally exist in almost every basic digital device created for commercial reasons.
In order for a set of useful printed circuit boards to be produced, the electrical components are required to be connected as soon as the PCB is completed. 2 construction techniques are available to be used to ensure that a set of printed circuit boards is formed. One is the construction through the hole in which the tips of the components are inserted into the holes, while the other is the surface mount construction in which the components are located in the pads positioned on the outer surfaces of the PCB. Both types of construction have component connections that are mechanically and electrically attached to the board by means of a melting metal solder.
In addition, various welding strategies could be used for connecting PCB components as well as the feasibility of mounting printed circuit boards. High amount of production should be accomplished by means of placing machines and welding type in bulk. However, skilled technicians are able to weld extremely small parts through the hands with the use of a microscope. This can usually be done with tweezers and a soldering iron consisting of an excellent tip that can be used for small amounts of prototypes. However, there are still pieces that are generally not feasible to solder using the hands just like the ball grid array.
The PCBs that would make up the printed circuit board assembly have coating as applied by immersion or spraying upon completion of component welding. This layer will essentially suspend corrosion and current flow, or perhaps short-circuit, as a result of condensation. PCBA or printed circuit board assembly is sensitive to permanent movement, this must be located inside antistatic bags during its transport. Components may be damaged if handling techniques are defective, as they may transmit static charge by the use of the board.