本规范涵盖了在金属或陶瓷外壳中密封的金属化塑料薄膜介质固定电容器既定可靠性（ER）的一般要求。本规范涵盖的电容器具有根据MIL-STD-690确定的故障率水平（FRL）。每个等级的可靠性由表I中的符号标识。这些FRL建立在90%的置信水平上，并维持在10%的生产商风险下，除非另有规定（见3.1），否则基于在最大额定电压和最大额定温度下进行的寿命试验。 除非另有规定（见3.1），否则已使用5:1的加速系数将在最大额定温度下140%额定电压下获得的寿命试验数据与最大额定温度下的额定电压联系起来（见6.1）。百万分之一（PPM）质量体系用于记录和报告按照本规范供应的电容器的平均出厂质量。在制造过程中需要统计过程控制（SPC）技术，以最大限度地减少根据本规范要求供应的电容器的生产变化。

This specification covers the general requirements for established reliability (ER), metallized plastic film dielectric, fixed capacitors, hermetically sealed in metal or ceramic cases. Capacitors covered by this specification have failure rate levels (FRL) established in accordance with MIL-STD-690. The reliability for each level is identified by a symbol in accordance with table I. These FRLs are established at a 90 percent confidence level and maintained at a 10 percent producer's risk and, unless otherwise specified (see 3.1), are based on life tests performed at maximum rated voltage at maximum rated temperature. Unless otherwise specified (see 3.1), an acceleration factor of 5:1 has been used to relate life-test data obtained at 140 percent of rated voltage at maximum rated temperature, to rated voltage at maximum rated temperature (see 6.1). A part per million (PPM) quality system is used for documenting and reporting the average outgoing quality of capacitors supplied to this specification. Statistical process control (SPC) techniques are required in the manufacturing process to minimize variation in production of capacitors supplied to the requirements of this specification.