METHOD FOR INSTALLATION OF ELECTRICAL AND RADIO COMPONENTS OF ELECTRONIC EQUIPMENT Russian patent published in 2022 - IPC H05K3/34 

FIELD: radio electronic engineering.

SUBSTANCE: invention relates to the field of radio-electronic engineering and can be used in the manufacture of various radio-electronic equipment and radio-electronic devices, including radio-electronic equipment of spacecraft operating under the influence of space conditions, with long periods of active existence. The expected result is achieved by the fact that electronic radio products (ERP) of radio electronic equipment (REE) is installed in two stages (mixed installation): first, for a group of ERP that make it possible to install in one mode simultaneously on two sides of the PB, then the installation of the remaining ERP, which may be damaged as a result of group installation, is performed. At the same time, preparatory operations are carried out first on one side of the PB, and then on the second side of the PB, including soldering paste is applied to the contact pads of the PB in the places where the ERP terminals are installed, glue is applied for fixing the ERP, ERP is installed, glue polymerization is carried out at temperature values determined by technical specifications (TS) for materials excluding activation of the flux and melting of the soldering paste. After completion of the preparatory operations on both sides of the PP, ERI soldering is performed simultaneously on two sides of the PB in accordance with the required temperature profile of the solder paste reflow. After the completion of group operations on both sides of the PB, individual installation of the remaining ERP is performed first on one side of the PB, and then on the other side of the PB with solder or soldering paste in accordance with the modes of technical specifications on the ERP, reducing or eliminating the risk of damage to the ERP during installation. Reducing or eliminating the risk of ERP damage is achieved by limiting technological impacts during installation: temperature, time, atmospheric, the introduction of heat-removing devices, the stages and sequence of work.

EFFECT: preventing the risk of ERP damage during installation, expanding the range of ERP used in REE, increasing the reliability and resource of the manufactured REE.

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