It seems that almost every semiconductor company is thinking or talking about 3D-IC stacking to boost functonal density & performance, reduce design size, reduce power consumption and hopefully reduce cost. An excellent summary of the 3D-IC design and its challenges was published recently by SCD Source and written by the popular long time industry writer Richard Goering (click here to read). 3D-IC when combined with SiP could over the ultimate advantage over SOC where time to market and product life cycles are short but functionality, performance and low-cost requirements are critical. As you will read however, there are a lot of variables and decisions to overcome,including that of design tool capability!!