How to recognize the electronic components on the circuit board? How to judge the quality of components?
Each electronic component can be recognized according to the electronic component marking symbols on the circuit board, and the quality of the electronic component can be judged based on the measurement results of the instrument. The smaller the measurement error of the instrument, the better the quality of the electronic component.
The circuit board miniaturizes and visualizes the circuit, and plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. The circuit board can be called a printed circuit board or a printed circuit board. The birth and development of FPC and PCB has given birth to a new product called a rigid-flex board.
Therefore, the soft-hard board is a flexible circuit board and a rigid circuit board, which are combined according to relevant process requirements after pressing and other processes to form a circuit board with FPC characteristics and PCB characteristics.
Classification of circuit boards:
On the most basic PCB, parts are concentrated on one side, and wires are concentrated on the other side. Because the wires only appear on one side, this type of PCB is called a single-sided circuit board. Single panel is usually simple to make and low in cost, but it has the disadvantage that it cannot be applied to too complicated products.
It is an extension of the single panel. When the single-layer wiring cannot meet the needs of electronic products, it is necessary to use the double panel. Both sides have copper clad and traces, and the lines between the two layers can be connected through vias to form the required network connection.
It refers to a printed board with three or more conductive pattern layers and insulation materials laminated between them, and the conductive patterns are interconnected as required. Multilayer circuit boards are the product of the development of electronic information technology in the direction of high speed, multifunction, large capacity, small size, thinness, and light weight.