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The most significant factors of reliability and durability of a microelectronic module are the design and technology of brazed and adhesive bonding, the elastic strength and plastic properties of the materials of silicon crystal, solder and glue joint. The construction to be created is designed to reduce the weight and size characteristics, to increase the reliability and to ensure the efficient heat dissipation. In the work, when simulating the stress-strain state of the microconnections of microelectronic modules, it has been determined that in tin- bismuth solder the stresses in the assembly materials are distributed more evenly and their value is significantly lower than when using SnPb and SnZn solder: in silicon by 5-30%, in copper conductor by 20-90%. It has been determined that under operating conditions and tests at the elevated temperatures, the voltage in the SnBi solder is 1.5 and 2.2 times lower than in the SnPb and SnZn solder, respectively. It has been shown that the epoxy glue cold curing has good adhesion to various structural materials, low labor intensity of the process and high durability. The rational thickness of glue seam 50-200 microns and a copper conductor of 20 microns has been determined. The recommendations on the design of microconnections of microelectronic modules have been given.
Anatoly I. Pogalov
National Research University of Electronic Technology, Moscow, Russia
Sergey P. Timoshenkov
National Research University of Electronic Technology, Moscow, Russia

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