Requirements for SMT processing on SMT adhesive
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...