关键词: 功率器件；注塑；填充不良；模塑料

Abstract: Defective filling is a common problem in the plastic packaging of power devices. How to reduce the generation of defective filling and prevent the occurrence of defective filling products is a common problem discussed by the engineers of plastic sealing equipment, product designers of power devices, plastic mold manufacturers and mold manufacturers. The harm of poor filling to assembly and the common mechanism of poor filling in the packaging process of power devices are described. Effective improvement measures are put forward by analyzing the design of plastic sealing products, molding plastics, process methods and other aspects, which provides some references for improving the quality of plastic packaging and developing molding plastics and molds.

Key words: power device; assembly; defective filling; EMC