The choice of the appropriate storage method of electronic components and assemblies is considerably dependent on the planned storage period. Storages of one or two years can be performed in so-called Nitrogen-Dry- Packs. For this purpose, the components are packed in special bags together with desiccants and moisture indicators, then they are flushed with nitrogen and vacuumized afterwards, so that no oxygen molecules causing the oxidation, are located in the bag after welding. A storage in nitrogen cabinets is also possible for the above mentioned period.
For processing-relevant and safety-related reasons it is strongly advised against a pure nitrogen storage of more than three years!
Therefore the only possibility is the HTV-Long-Term Conservation according to the TAB®-method in order to retard the aging processes of the components significantly and to assure the function and processability over a long time!