Analysis of the effects of geometry on the press fit application in automotive power modules

Abstract

Semiconductors and electronics have been found to have an increasing use in automobile design. One key component of an automobile is the power module, which is a high voltage component that finds itself in extreme operating conditions. Due to this condition, the power module demands for highly effective terminal connections that can withstand the extreme operating condition specifically on the terminals that will connect the power module to the automobile system. Press fit technology has been a solution for cheap and reliable methods of creating interconnections since the 1980s; however, necessary innovations exist for more environmental design, and increase demand in quality and quantity. Press fits are simple, force-fitting connectors that allow permanent bonds without solder or adhesive bonding and a shortened process time. This research presents a unique methodology on the evaluation of the effects of the geometry to the insertion force and retention force using finite element analysis. The result showed that the geometry of the pin in a press fit pin configuration has a significant effect on the insertion force, retention force, as well as in the equivalent stress.

Application of Friction Riveting technique for the assembly of electronic components on printed circuit boards (PCB)

“…PCBs consist of a glass-reinforced epoxy resin laminate substrate, on which electrical copper circuits are stacked with mounted or attached components and conductors [1]. Electronic components are mostly assembled on PCBs using press-t processes, in which holes are drilled through the board to attach electrical components according to the amount of mechanical interference [2]. This method has disadvantages such as a high number of process steps, the need for pre-drilled holes on both sides of the board, the use of an anvil, and connecting or mating screws [3].…”