Thermally conductive adhesives provide many advantages over traditional mechanical fastening techniques.

Electronics packaging has utilized one-part and two-part liquid adhesives and sealants for many years. Solid thermal interface pads or sheets have also been widely used in electronics applications.

When QFN and other bottom-terminated devices are soldered using solder paste at atmospheric pressure, some voiding is always observed. The process of void formation during reflow is dynamic; voids, primarily formed from volatilized flux materials and soldering reaction products, grow, coalesce and then vent at the margins of the solder joint while the solder is molten.