PROTON-INDUCED TRANSIENTS IN OPTOCOUPLERS - IN-FLIGHT ANOMALIES, GROUND IRRADIATION TEST, MITIGATION AND IMPLICATIONS

We present data on recent optocoupler in-flight anomalies and the subs equent ground test irradiation performed. Discussions of the single ev ent mechanisms involved, transient filtering analysis, and design impl ications are included. Proton-induced transients were observed on high er speed optocouplers with a unique dependence on the incidence partic le angle. The results indicate that both direct ionization and nuclear reaction-related mechanisms are responsible for the single events obs erved.