COILS 3D example of custom packaging for a SoC Design

Once a System on Chip (SoC) design has fabricated in a foundry the individual items need to be put into an  electronic package that protects it from the external environment and also interconnects it to other parts of a larger system, often a Printed Circuit Board. The package may also need to perform other functions such as transfer of heat or protection from emissions that could affect device performance. One of the major design considerations is the interconnect and within the SoC design the pads that are used to make the connections to the package, traditionally via wire bonding but also via techniques using ball bonding or metal pillars.

If the design is to be combined with others as part of a Multi-Part Wafer (MPW) service then these services also usually provide a packaging service at least for standard die. As System on Chip designs become more complex advanced techniques using 3D stacking or System in Package can be used which can require unique packaging to be fabricated. A SoC may involve electrical optical, mechanical, chemical, and even biological interaction with the environment and require specific design considerations.

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