PCB Blogger-China PCB Factory,HOYOGO

       In the SMT processing process, static electricity is a "troublemaker". It will damage our PCB boards and electronic components. What specific problems will it cause? And how do we  solve   these problem ?   Let ’ s first take a look at some of the problems that static electricity may cause: 1. Component  D amage Electrostatic discharge can cause damage to electronic components. Sensitive integrated circuits, transistors, diodes and other components may suffer from electrical breakdown, excessive voltage and other problems under the influence of electrostatic discharge, and thus lose their normal functions.     2.   Production  E quipment   F ailure Regardless of how small static electricity is, if electrostatic discharge acts directly on production equipment, especially  the  sensitive electronic components on SMT equipment, it may cause equipment failure and shutdown   accidentally , thus affect...

       In SMT processing, SMT adhesive is one of the important production raw materials. Before wave soldering, the PCBA factory needs to use SMT adhesive to fix the mounted components on the corresponding position of the PCB, so as to prevent the components from falling into the tin pot during wave soldering.  So what are the requirements for SMT adhesives in SMT processing?       1.  The service life is longer at room temperature.     2.  Suitable viscosity. The viscosity of the SMT adhesive should be able to meet the needs of different sizing methods, different equipment, and different sizing temperatures. There should be no wire drawing when dispensing glue. It can maintain enough height after coating without forming too much rubber base. After coating and before curing, the drips should not flow, so as not to reach the welding part and affect the welding quality.     3.  F ast curing . The  SMT  ad...

       In SMT processing, solder paste is an important raw material in production.   The selection of solder paste is very important, which is directly related to the quality of final products. So, what are the requirements for solder paste in SMT processing?       1.   Long storage life is required.  The solder paste can be stored for 3 to 6 months at 0 ~ 10 ℃, and there should be no chemical change during storage, and the phenomenon of separation of solder powder and flux should not occur,  and the viscosity and adhesion of solder paste need to remain unchanged.     2.  Good wetting performance is required.   In SMT processing, the active agent and wetting agent components in the flux should be selected correctly, so as to better meet the wetting performance requirements.     3. Long working life is required. Solder paste has been used for a long time in SMT processing, so the solder paste s...

      Solder paste is an indispensable material in SMT processing. The main function of solder paste is to form electrical connections between PCB pads and electronic components. There are different types of solder paste, so it is necessary to choose solder paste according to the type of customer's products. So what types of solder pastes are there?       1.  Leaded and lead-free solder pastes L eaded solder paste : As the name suggests, it contains lead in the ingredients. Although it is harmful to the environment and human body, the welding effect is good, the cost is low, and the mechanical strength of the solder joint is high. It can be applied to some electronic products that do not require environmental protection.     L ead-free solder pastes :   Its characteristics are that it is less harmful to human body and belongs to environmental protection products, but the mechanical strength of solder joints is lower than that of leaded s...

In  SMT processing , many processes need to be set the parameters of  the  processing equipment .  However, many detailed parameters cannot be achieved overnight. SMT manufacturers need to sum up experience in long-term practice to process high-quality products.  The setting steps are mainly divided into the following 7 steps:       1.  Graphic alignment Use the printer camera to align the optical MARK point on the stencil on the workbench, and then fine-tune the X, Y,  θ  and other graphics to make the stencil and the stencil pad patterns completely match.     2.  Angle of scraper and st encil The smaller the angle between the  scraper  and the stencil, the greater the downward pressure. The solder paste can be easily injected into the stencil,  and   the solder paste ca n be  squeezed into the bottom of the stencil . The angle between the scraper and the stencil is usually 45-60 degrees. ...

With the development of electronic products in a small and precise direction, the size of many SMD components is getting smaller and smaller, not only the requirements of the processing environment are constantly improving, but also higher requirements for the  SMT processing  technology.  To do a good job in  PCBA processing , a professional  SMT factory  must do at least the following  3   points.   1.  Solder paste needs to be used during SMT processing.  After the SMT factory purchases the solder paste, if  they   don't use it immediately,  they   must put it in an environment of 1-10 ° C, instead of placing it in a light-irradiated place or storing it in an environment below 0 ° C!   This is to ensure that the quality of the solder paste does not affect subsequent use.     2.  The SMT factory must check the placement machine equipment frequently.  If the equipment is aging, or some p...

SMT proce ssing  is a very critical process in today ’ s electronics manufacturing process. Now more and more PCBs are produced and widely used. SMT assembly manufacturing involves many complex processes. In SMT processing, efficiency is of the utmost importance. How can the SMT factory improve the SMT processing efficiency?   1.  Choose components of the same type Components play a very important role in the efficiency of SMT processing. They are used to manufacture the entire PCBA to achieve electrical function connectivity. If you choose a component manufacturer, it is best to choose the same one, because not all manufacturers can produce the same components. The size, shape, and function of components produced by different manufacturers may be different, and it is difficult to perform efficient processing with complex and diverse categories.  In the process of patch processing, the fewer types of components, the better, the more uniform the brand model, the bette...