Downloaded from https://www.everyspec.com AMW 70O6-19 Exigl No. 38 Capacitor life test, fixed calendar time at each temperature. The table shows the test conditions and the raw failure data. Temperature, Number of Total-test- Number of ____c_ _ devions time. (I06 hr) fgilures 25 100 0.2688 1 70 100 0.2688 0 125 100 0.2688 4 145 100 0.2688 12 The acttvation energy was estimated to be 0. 10 to 0.62 eV; the failure rate at 25 OC was estimated to be 0.04 to 10 per 106 hr; the range for each is for a total of 4 standard deviations. The point estimates are 0,363 eV and 0.638 per 106 hr. If only point estimates had been given, they would have been very misleading.
In truth, one knows relatively little about the 25 *C failure rate of the capaoitore, or how the failure rate changes with temperature. . ..