Generally speaking, PCB circuit board design is based on the circuit schematic diagram to achieve the purpose and function required by the circuit designer. Of course, such PCB circuit board design also requires the designer's years of experience accumulation, then the circuit board How does the factory produce high-quality products? I think there are the following aspects.

　　 1. Design of electric strata

Generally speaking, Shenzhen circuit board factory with good reputation and excellent service will design its electric ground layer as a power supply in the form of flower pads. The ground layer is opposite to the image on the actual printed board. All connections will be isolated lines. By the way, when drawing several sets of power supplies or ground isolation lines, you should be very careful not to leave gaps, otherwise it will cause two sets of power supplies to short-circuit, and of course the connected area should not be blocked.

　　 2. Overlapping technology of pads in circuit board factories

　　 The overlap of the pads represents the overlap of the holes. During the drilling process, Shenzhen PCB Factory will break the drill bit due to multiple drilling in the same place, resulting in damage to the hole. Therefore, which product of the Shenzhen PCB factory is better, then the overlap of its holes has been inspected layer by layer.

　　 Three, surface mount device pad technology

Surface mount device pad technology is for continuity testing. For very dense surface mount devices, the distance between his feet is very small, and his pads are also exceptionally thin. When installing test pins At the time, the positions must be staggered up and down, so that the high quality of the circuit board can be guaranteed to a higher degree. For the circuit board company that has passed the quality certification, his surface mount device pads are not too short.