Development of solder replacement isotropic conductive adhesives

As a potential alternative to lead-bearing soldering technology, conductive adhesive technology has increasingly attracted the attention of the electronics industry. This new technology can offer numerous advantages over traditional soldering technology. However, some critical limitations of this technology have slowed its potentially wide application in the electronics industry. These limitations include lower electrical conductivity, increased contact resistance during elevated temperature and humidity aging, and poor impact performance. In the past few years, there have been tremendous efforts to address these issues, and conductive adhesive technology has advanced significantly. This paper gives an overview of the main research work and achievements in conductive adhesive technology.