Comparative study on radio frequency and reliability performance of electronically conductive adhesives

ECAs are nowadays used as a lead-free replacement for solders. They are used in microelectronics for packaging, bonding of surface mount devices, in flip chip and in ball grid arrays and in LCD screens. Benefits of ECAs over solders include lower temperature and simpler processing, environmental friendliness, finer pitch and lower thermomechanical stresses. However, ECAs have higher overall electrical resistance and they are not as reliable.