Due to rapid changes in packaging design and material, many companies find themselves forced to purchase additional quantities of components in order to guard against the impact of component obsolescence on their final product designs. This in turn creates an issue of long term inventory storage.
Product lifecycles continue to shorten, with new models being released sooner than ever before. Many manufacturers, such as automobile suppliers, must guarantee the availability of replacement parts including PCBs for up to ten years. This situation also necessitates the advance purchase and extended storage of components and materials. Further complicating the problem is that most components cannot be stored for more one year without very special handling procedures. (IPC/JEDEC J-STD-033)