PCB Blogger-China PCB Factory,HOYOGO

      PCB pad  falling off   is a  relatively  common  bad   phenomenon in   the   PCBA processing process , that is, the phenomenon that the pads are separated from the PCB. As a necessary medium for welding and assembling electronic components and PCB boards, once the pads fall off, the PCBA products will fail to be used normally. So what are the reasons for the PCB pads to fall off?       PCB and soldering problems are the main cause of PCB pads falling off.     PCB problem:   The poor adaptability of the copper foil and the resin of the PCB substrate will lead to the mismatch between the copper foil and the resin system, causing the PCB pad to fall off.   In the PCB manufacturing process, excessive etching of the circuit leads to copper throwing or deformation of the pad due to the collision of the pad position during the processing process, which will also cause the PCB pad to fall off.  ...

The application of PCB in today's electronic products can be seen everywhere, and there are different shaped  pads on the PCB. As the basic unit of PCB moun ting, what is the role of the pad?       The PCB pad  refer s to the lead hole on the PCB board and the surrounding copper foil of various shapes.   The types of pads are different, the common ones are square pads, round pads, oval pads, etc., and some special pads, such as teardrop pads, cross pads, and plum pads.     Take the teardrop pad as an example .   I t looks like a drop of water.   It is generally used when the electronic components on the PCB are relatively small.   If it is directly connected to the circuit on the PCB board, it will be more difficult, and even if the connection is successful, as long as the PCB board is slightly impacted in the future, it will cause the original connection to loosen or even fall off directly.   To prevent this from happening, th...