SIOV metal oxide varistors Leaded varistors, SuperioR, S25 series Series/Type: B722* Date: May 2017 EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited. EPCOS AG is a TDK Group Company.Leaded varistors B722* SuperioR, S25 series Construction Round varistor element, leaded Coating: epoxy resin, flame-retardant to UL 94 V-0 Features High-energy SuperioR series E4 Wide operating voltage range 130 750 V RMS UL approval to UL 1449 (file number E321126 exception 580 V) All types duty cycle 6 kV/ 3 kA = >10 pulses, according to IEC 60950-1, Annex Q IEC 61051-2 Very high surge current rating up to 20 kA Approvals UL CSA IEC VDE Delivery mode Bulk (standard) For further details refer chapterTaping, packaging and lead configuratio for leaded varistors. General technical data Climatic category to IEC 60068-1 40/105/56 Operating temperature to IEC 61051 40 ... +105 C Storage temperature 40 ... +125 C Electric strength to IEC 61051 2.5 kV RMS Insulation resistance to IEC 61051 100 M Response time < 25 ns Please read Cautions and warnings and Page 2 of 24 Important notes at the end of this document.