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Old June 17th, 2011, 07:44 AM
Corono Corono is offline
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Join Date: May 2011
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Default Reliability of electrolyte capacitors: Peak-Current

Hi

For the reliability prediction (IEC TR 62380 or RDF 2000) of aluminum, non solid electrolyte capacitors, there is a factor "Peak value of pulse current". But there is no information about the frequency of this peak. So this would mean that it makes no difference if this Peak is applied once in a cycle or often. In an AC-DC-PFC-Converter, the ripple current in the bulk capacitor is quite chaotic. Is there a rule how two scale the Peak-Current if it occurs only several times and not continuously?

Best wishes

Corono
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