本规范涵盖了既定可靠性（ER）和非既定可靠性（非ER）、（产品等级C）、塑料（或金属化塑料）电介质、固定电容器的一般要求，这些固定电容器主要封装在非金属外壳中，考虑到有限的长期防潮特性，用于封装或封装系统、阻塞、过滤和旁路应用（见6.4）。本规范涵盖的ER电容器的故障率水平（M、P、R和S）为每1000小时1.0%至0.001%。这些故障率（FR）建立在90%的置信水平上，并保持在10%的生产商风险下，基于在+85摄氏度或+105摄氏度下进行的寿命测试，以适用者为准。使用5:1的加速系数将在+85摄氏度或+105摄氏度（以适用者为准）的额定电压的125%或140%下获得的寿命试验数据与+85摄氏摄氏度或+105摄氏度（视适用者而定）的额定压力联系起来。 产品级别基于灾难性故障和发生在降级限制之外的故障。

This specification covers the general requirements for established reliability (ER) and non-established reliability (non-ER), (product level C), plastic (or metallized plastic) dielectric, fixed capacitors, enclosed in nonmetal cases intended primarily, in view of the limited long term moisture resistant characteristics, for use in potted or encapsulated systems, in blocking, filter, and by-pass applications (see 6.4). ER capacitors covered by this specification have failure rate levels (M, P, R, and S) ranging from 1.0 percent to 0.001 percent per 1,000 hours. These failure rates (FR) are established at a 90-percent confidence level and maintained at a 10-percent producer‰Ûªs risk and based on life tests performed at +85 Degrees C or +105 Degrees C, whichever is applicable. An acceleration factor of 5:1 has been used to relate life test data obtained at 125 percent, or 140 percent of rated voltage at +85 Degrees C or +105 Degrees C, whichever is applicable, to rated voltage at +85 Degrees C or +105 Degrees C, whichever is applicable. The product levels are based on catastrophic failures and failures occurring outside the degradation limits.