Total dose test of commercial off-the-shelf components to be used in powersupply for space experiments

Commercial off-the-shelf components have been tested for their use on the p ower supplies of the AMS and PAMELA experiments. The test has been performe d using the CALLIOPE Co60 source at the Casaccia (Rome -Italy) Laboratory o f ENEA according to the ESA/SCC 22900 specifications. The total dose for th is test was 30 krads. Measurements of relevant parameters for each componen t has been taken at 3, 10 and 30 krads. Annealing and ageing has also been perfomed according to the ESA specification. The results on the degradation of performaces in discrete transistors, Op-Amps, regulators and other anal og and digital components are reported.