Induced delamination of silicon-molding compound interfaces

Interface fracture properties are increasingly requested in electronic packaging, be it for design problems or reliability issues. We demonstrate an induced delamination of the epoxy molding compound and die silicon interface, and propose a mixed mode chisel testing setup (MMC) and its experimental procedure. The MMC addresses several drawbacks of existing methods. The work includes samples from package fabrication processes and the establishing of critical fracture mechanics properties through finite element simulation. The setup allows for the investigation of interfaces at package scale.