Air gaps migrate from chip- to PCB-level
Keywords: low-k dielectrics air-gap interconnections PCB
[Summary of tips] How it's doneAir-gap technology for PCBs adds an organic polycarbonate material to the layer of the PCB where the air gaps are supposed to reside. The whole surface of the PCB is coated with the polycarbonate, then heated, until it evaporates from everywhere except the copper traces. Later, after the rest of the PCB is assemble......
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