Impedance Controlled PCB Design1 IntroductionWith the development of science and technology, especially in the progress of integrated circuit materials, the calculation speed has been significantly improved, and the integrated circuit has been promoted to
Gold finger design and processing of PCBThis article comes from Jeddahshare1. The definition of gold finger (Gold Finger or Edge Connector) Insert one end of the PCB board into the connector card slot, use the pins of the connector as the outlet for the
Rigid Flex PCB Design1. PCB compositionPCB contains two important components: Core and PP (Prepreg, semi-solid sheet).Both surfaces of Core are covered with copper foil, which is used as a conductive layer, and the solid material is filled between the two
For a long time in the industry, the Tg value has been the most common index used to classify FR-4 substrates. It is generally believed that the higher the Tg value, the higher the reliability of the material.For example, in the picture below, the descrip
First, to perform SMT SMT processing, you need to have a dedicated SMT machine. Before you begin processing, you need to check the state of the patch machine and ensure that it is working properly. Checking the condition of the patch machine includes clea
The reserved process edge is the part added on both sides or four sides of PCB board to assist the patch plug-in to weld the missing board, which is mainly to assist production and does not belong to the PCB board. It can be removed after the PCBA manufac
Generally, the parameters of PCB board layer, the distance between signal lines, the electrical characteristics of the driver end and the receiver end, and the terminating mode of signal lines all have certain influence on the crosstalk.
The second step to complete the PCB production. The first step of making a PCB, determining the physical size of the board frame, the size of the wiring and the various board layers required, can be completed through the wizard.
The exchange of PCB design/manufacturing data is the key to the information integration of electronic design and manufacturing. Therefore, it is urgent to establish a new format standard of PCB data exchange.
For small power digital integrated circuit, choose 0.2-0.5mm line width. In the same PCB, the ground and power cables should be wider than the signal cables.
Therefore, the interference source and propagation path of electromagnetic interference must be analyzed. Common electromagnetic interference in PCB design includes conduction interference, crosstalk interference and radiation interference.
At the same time, because the stiffness of the electronic housing is much greater than that of the PCB component, the finite element model imposes a fixed support constraint on the screw holes at four corners to simulate the screw connection between the P
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