This specification 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.