Home / OSAT OSAT OSAT may refer to: Open-source appropriate technology Outsource semiconductor assembly and test, see Semiconductor consolidation See also Osat, in Bosnia and Herzegovina One School at a Time (OSAAT) Topics referred to by the same term This disambiguation page lists articles associated with the title OSAT.If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.