IEC 60939-1:20 10涉及用于电子或电气设备和机器内或与之相关联的电磁干扰抑制的无源滤波器单元。一个外壳内的单通道和多通道滤波器都包括在本通用规范的范围内。本通用规范建立了标准术语、检验程序和测试方法，用于IECQ-CECC电子元件系统的分段和详细规范。与上一版相比，此版本包括以下重大技术变更: a)表3已更新，规定了如何处理中性的三相滤波器； b)本版删除了所有关于“质量评估”的细节，因为该标准是安全标准；c)过滤器应接受IEC 60068-2-1的Aa测试16小时，使用相关规范中规定的较低类别温度的严重程度； d)由于IEC 60068-2-20不再区分方法1A和1B，而仅描述了方法1，因此对要使用的方法的引用被更新。

IEC 60939-1:2010 relates to passive filter units for electromagnetic interference suppression for use within, or associated with, electronic or electrical equipment and machines. Both single and multi-channel filters within one enclosure are included within the scope of this generic specification. This generic specification establishes standard terms, inspection procedures and methods of test for use in sectional and detail specifications within the IECQ-CECC system for electronic components. This edition includes the following significant technical changes with respect to the previous edition:
a) table 3 has been updated, specifying how to handle the Neutral by 3-phase filter with Neutral;
b) all details about "Quality assessment" have been deleted in this edition, because this standard is a safety standard;
c) filters shall be subjected to Test Aa of IEC 60068-2-1 for 16 h, using the degree of severity of the lower category temperature as prescribed in the relevant specification;
d) since IEC 60068-2-20 does no longer make a difference between Method 1A and 1B, but only describes Method 1, references to the method to be used are updated.