The White Neutron Source operated at the Research Center for Nuclear Physics, Osaka University is presented. This facility is one of the few white neutron irradiation test facilities in the world that is certified in JEDEC JESD-89A Test Standard and is used for soft error testing of semiconductor devices. Since its launch in 2004, it has been utilized by semiconductor-related companies both in Japan and overseas and plays an important role as a technological foundation for realizing Society 5.0.