The printed circuit board, PCB design, is one of the most essential design fundamentals within the design of an electrical product. In most cases, an electric hardware design manufacturer will design the circuit, and then a PCB layout, an expert will start the PCB design and layout from a schematic provided using a PCB CAD system.
The PCB layout and design is a professional skill needing knowledge of not only the design of the PCB software and PCB CAD system but also a variation of methods and standards. It is used to guarantee that the basic circuit design is successfully moved to an overall printed circuit board that can be fabricated in an electrical circuit manufacturing environment.
There are two main techniques of mounting in a PCB board, and that is Through-hole technology and Surface-mounting technology.
Through-hole (Thru-hole) is the manual technique of fitting components into holes onto the PCB surface with the help of the wire leads.
Surface Mount Technology or SMT is the most commonly used method in mass production. The method is done by precise and fast SMT machines that avoid human error as well as save your time and money.
The following are some soldering methods of the PCB layout.
Reflow soldering is a technique that sticks the components to the PCB. The PCB assembly drives through a reflow oven or an infrared lamp that warms up the board until the solder melts, permanently joining the components to the surface.
Wave Soldering mostly uses the thru-hole method to manually add the components. In these instances, your PCB assembly will first go through a reflow oven, and then after the addition of other components manually, it will go through a wave soldering machine.
The iron soldering is not used in mass manufacturing just in some specific cases.
The layout of the PCB assembly is tested through various methods to ensure the quality of the PCB, and these tests include an In-circuit test (ICT), Automatic optical inspection (AOI), and X-ray. After these tests, the PCB design and layout provider companies provide you with the top-quality PCB surface board.