2021IEC 61051-2:2021 Varistors for use in electronic equipment - Part 2: Sectional specification for surge suppression varistors
2009IEC 61051-2:1991/AMD1:2009 Varistors for use in electronic equipment - Part 2: Sectional specification for surge suppression varistors; Amendment 1
1991IEC 61051-2:1991 Varistors for use in electronic equipment; part 2: sectional specification for surge supression varistors