MIL-PRF-39001E涵盖了既定可靠性（ER）和非既定可靠性的一般要求 可靠性（非ER）、云母介质、固定电容器（见6.1）。电流变电容器有故障率 水平（FRL）从每1000小时1.0%到每1000小时0.001%（见1.2.1.7）。FRL是 建立在90%的置信水平。由表V中规定的适用符号标识的FRL为: 指125°C或150°C（视情况而定）下全额定电压（见1.2.1.6）下的运行寿命。加速因子 25:1的比例用于将额定温度下150%额定电压下的寿命试验与 额定温度。

MIL-PRF-39001E covers the general requirements for established reliability (ER) and nonestablished reliability (non-ER), mica dielectric, fixed capacitors (see 6.1). The ER capacitors have a failure rate level (FRL) ranging from 1.0 percent per 1,000 hours to 0.001 percent per 1,000 hours (see 1.2.1.7). The FRL is established at a 90 percent confidence level. The FRL, identified by the applicable symbol specified in table V is referred to operational life at full rated voltage (see 1.2.1.6) at 125°C or 150°C, as applicable. An acceleration factor of 25:1 has been used to relate the life test at 150 percent of rated voltage at rated temperature to rated voltage at rated temperature.