2009BS EN 61051-1:2009 Varistors for use in electronic equipment - Generic specification
2009BS EN 61051-1:2008 Varistors for use in electronic equipment - Generic specification
1992BS QC 420000:1992 Harmonized system of quality assessment for electronic components - Varistors for use in electronic equipment: generic specification
1978BS CECC 42000:1978 Harmonized system of quality assessment for electronic components: generic specification: varistors