Quality Policy

IEC Publications – test procedures and requirementsElectrolytic capacitorsTest iEC-Publ. Procedure requirementsSurge voltageTest 4.14 60384-4The capacitor to be subjected to 1000cycles of charge to voltage 0.5 min loadperiod followed by a no load period of5 min. 30 s.Temperature = upper category temp.Applied voltage: 1.15 x rated voltagefor U R≤ 315 V. 1.10 x rated voltagefor U R> 315 V.Time constant for charge 0.1 ± 0.05 s.Duration: 30 sRecovery: 1–2 hNo leakage of electrolyte or othervisible damage.DC/C ≤ 15%Leakage current and tangent ofthe loss angle not to exceed thevalues given in the article list.Pressure reliefTest 4.16 60384-4A DC voltage is applied in the reversedirection to give a current of 1 to 10AThe pressure relief is to open in suchaway that any danger of explosion orfire is eliminated.Storage at high temperatureTest Ba 60068-2-2Storage at low temperatureTest Aa 60068-2-196 ± 4 at upper category temperature.Recovery: Minimum 16 h.72 h lower category temperature acc.to table below.Category Temperature °C25/-/- –4040/-/- –5555/-/- –65Recovery: Minimum 16 hNo leakage of electrolyte or othervisible damage. Leakage current≤ 2 x the maxvalue in the article list.DC/C – 10%No leakage of electrolyte or othervisible damage. The marking to belegible.DC/C ≤ 10%. The leakage currentand tangent loss angle to be loweror equal to the values given in thearticle list.Characteristics at high andlow temperatureTest 4.19 60068-2Test Aa of 60068-2-1 followed by test Ba of60068-2-2Temp: lower respectively upper categorytemperature. The impedance to bemeasured at lower category temp.Leakage current, tanδ and capacitanceto be measured at upper category temp.The ratio of the impedance measured atlower category temperature and initiallymust not exceed the valuesin the table below.Rated voltageVDCU R≤ 6.3 56.3 < U R< 16 416 < U R≤ 160 3U R> 160 6Ratio ofimpedanceCharge and dischargeTest 4.20 60384-4Number of cycles: 10 6Temp: 20°CCharge Applied voltage: U RDuration: 0.5 sTime constant 0.1 sDischargeThe discharge resistor to give a timeconstant = 0.1 sNo leakage of electrolyte or othervisible damage. DC/C ≤ 10%Fire Hazard Testing60695-2-2 Needle-flame test.Duration of test flame: 30 sMax burning time after removal oftest-flame: 30 sKEMET Electrolytic Capacitors23