IEC 62668-2:20 19定义了避免使用假冒、回收和欺诈性组件的要求，这些组件不是从原始组件制造商（OCM）购买的，或者是从特许经销商网络之外购买的，用于航空航天、国防和高性能（ADHP）行业。作为减损，只有在没有合理或实际的替代办法时才使用这种做法。 注:通常，本文件与IEC 62239-1和IEC 62668-1结合使用，使ADHP industries能够管理和避免在其供应链中使用假冒、回收和欺诈性组件。 虽然本文档是为ADHP行业开发的，但其他高性能和高可靠性行业也可以自行决定使用。 本第一版取消并取代了IEC TS 62668的第二版-2 201 6年出版。本版构成技术修订版。与IEC TS 62668-2第二版相比，本版本包括以下重大技术变更: a)风险评估过程的更新，包括参考SAE AS6081； b)测试方法的更新，包括参考已发布和正在开发的SAE AS6171测试方法； c)根据IEC 62668-1对DFAR的定义和参考进行更新。

IEC 62668-2:2019, defines requirements for avoiding the use of counterfeit, recycled and fraudulent components when these components are not purchased from the original component manufacturer (OCM) or are purchased from outside of franchised distributor networks for use in the aerospace, defence and high performance (ADHP) industries. This practice is used, as derogation, only when there are no reasonable or practical alternatives.
NOTE: Typically this document is used in conjunction with IEC 62239-1 and IEC 62668-1, enabling ADHP industries to manage and avoid the use of counterfeit, recycled and fraudulent components in their supply chains.
Although developed for the ADHP industry, this document can be used by other high-performance and high-reliability industries, at their discretion.
This first edition cancels and replaces the second edition of IEC TS 62668-2 published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the second edition of IEC TS 62668-2:
a) updates to the risk assessment process, including reference to SAE AS6081;
b) updates to the test methods, including reference to the SAE AS6171 test methods published and in development;
c) updates in line with IEC 62668-1 for definitions and references to DFARS.