A printed circuit board PCB mechanically supports and electrically connects electrical or electronic components using conductive tracks, pads, and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate.
PCB (Printed Circuit Board) is important electronic component support for electronics and a carrier for the electrical interconnection of electronic components. Because it is made by electronic printing, it is called a printed circuit board.
PCB (printed circuit board) is one of the important parts of the electronics industry. Almost every kind of electronic equipment, from electronic watches, calculators, to computers, communication electronic equipment, military weapon systems, as long as there are electronic components such as integrated circuits, in order to make the electrical interconnection between the various components must be printed.
The PCB’s function
After electronic equipment adopts printed boards, due to the consistency of similar printed boards, manual wiring errors can be avoided, and electronic components can be automatically inserted or mounted, automatic soldering, and automatic detection, ensuring the quality of electronic equipment, Improve labor productivity, reduce costs, and facilitate maintenance.
The printed circuit board is composed of an insulating bottom plate, connecting wires and pads for assembling and welding electronic components, and has the dual functions of conductive lines and insulating bottom plates.
It can replace complex wiring and realize the electrical connection between the various components in the circuit, which not only simplifies the assembly and welding of electronic products, but also reduces the workload of wiring in the traditional way, and greatly reduces the labor intensity of workers;
Moreover, the volume of the whole machine is reduced, the cost of the product is reduced, and the quality and reliability of electronic equipment are improved. The printed circuit board has good product consistency, and it can adopt a standardized design, which is conducive to the realization of mechanization and automation in the production process.
At the same time, the entire printed circuit board that has been assembled and debugged can be used as an independent spare part to facilitate the interchange and maintenance of the entire product. At present, printed circuit boards have been extremely widely used in the manufacturing of electronic products.
The earliest printed circuit boards used paper-based copper-clad printed boards. Since the emergence of semiconductor transistors in the 1950s, the demand for printed boards has risen sharply. In particular, the rapid development and wide application of integrated circuits have made the volume of electronic equipment smaller and smaller, and the density and difficulty of circuit wiring have become greater and greater, which requires continuous updating of printed boards.
At present, the variety of printed boards has developed from single-sided boards to double-sided boards, multilayer boards, and flexible boards;
The structure and quality have also been developed to ultra-high density, miniaturization, and high reliability.
New design methods, design supplies, board-making materials, and board-making techniques continue to emerge.
In recent years, various computer-aided design (CAD) printed circuit board application software has been popularized and promoted in the industry. Among specialized printed board manufacturers, mechanized and automated production has completely replaced manual operations.