Effects of Neutron Radiation on the Current Transfer Ratio of GaAsP and AlGaAs Optocouplers

This work presents the degradation of the GaAsP and AlGaAs optocouplers as a result of the displacement damage produced by neutron radiation. The devices were irradiated using a (14.5 ± 0.4) MeV monoenergetic neutron beam on the Frascati Neutron Generator (FNG). In particular, the degradation of the Current Transfer Ratio (CTR) parameter is studied, and it can be represented as an exponential function of the fluence for the HCPL-5530, HSPL-5730, IBS-249, IHS-300, OLF-400, and OLS-300 optocouplers.