What are multi-layer PCBs used for?

1, high assembly density, small size, light weight, to meet the needs of electronic equipment light miniaturization;

2, due to the high assembly density, the connection between the components (including components) is reduced, simple installation, high reliability;

3, because the graphics have repeatability and consistency, reduce wiring and assembly errors, save equipment maintenance, debugging and inspection time;

4, can increase the number of wiring layers, thus increasing the design flexibility;

5, can form a circuit with a certain impedance, can form a high-speed transmission circuit;

6, can set the circuit, magnetic circuit shielding layer, but also can set the metal core heat dissipation layer to meet the shielding, heat dissipation and other special functions.



With the continuous development of electronic technology and computer, medical, aviation and other industries to improve the requirements of electronic equipment, circuit board is shrinking, reducing the quality, increasing the direction of density development. Due to the limitation of available space for single-sided and double-sided PCB, it is impossible to achieve further improvement of assembly density. Therefore, it is necessary to consider the use of more layers and higher assembly density of multi-layer PCB. Multilayer circuit board has been widely used in the manufacture of electronic products due to its flexible design, stable and reliable electrical performance and superior economic performance.