Progress in performance of high voltage aluminum electrolytic capacitors

Development results of high performance aluminum electrolytic capacitors for up to 250 V applications are discussed in the article. Complex improvements to the key parameters allow the achievement of enhanced characteristics for the capacitors in conjunction with relatively low cost. Life time of at least 3500 hrs. at 125 oC, low ESR and maximum drift of 10% for the main characteristics (ESR, tan(delta) and C) during the life time result from using the electrolyte.