Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/06/Optimizing-Reflowed-Solder-TIM-sTIMs-Processes-for-Emerging-Heterogeneous.pdf
backside (initial studies show no effect on lids) Flux formulation optimization, using halogen-free, ultralow residue and VOC-free types, as flux is often used as tackifier as well as a reducing agent CSAM and 3D x-ray to determine void location in x, y and
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