Electrolytic Capacitors, electronics podcast, Ivan Quiroz, Kemet, MacroFab, macrofab engineering podcast, Suzana Jankuloska

MEP EP#196: Foamy Power Factors – Electrolytic Capacitors with KEMET

Podcast Notes

Episode 200 is Coming Up!

  • Question / Answer setup like Episode 100
  • Send them via Audio Format to podcast@macrofab.com

Ivan Quiroz

  • Over 19 years of electronic design and development experience in different industries ranging from aviation to industrial automation
  • His technical expertise surrounds the intrinsic requirements and detailed development of circuits
  • In his down time, he likes to develop escape room puzzles, sensors, and anything he can 3D print

Suzana Jankuloska

  • Is an electrical engineer from Macedonia
  • Has been with KEMET for 7 years and as a Product Manager of Electrolytic Capacitors for 3 years
  • Loves solving problems and sudoku and is a fan of martial arts and the movie Ip Man

Electrolytic Capacitors

  • Discuss ESR, ESL, Dissipation factor, Tan Delta, Ripple current, and life span
  • How to read the datasheet for an electrolytic capacitor beyond the value/voltage/dimensions
    • impedance at a known switching frequency
  • Brief introduction to a new type of electrolytic capacitor (polymer)
  • Link the electrolytic capacitor to the need for a bank capacitors
  • Signals through electrolytics
  • Leave on forever vs. multiple inrush cycles preferred for lifetime?
  • What drifts out of spec first?
  • The wear-out failure mode is loss of electrolyte
    • It is possible to measure this by weighing the capacitor before and after operating it at elevated temperature
    • When the capacitor loses a certain amount of weight, it is likely to fail
    • In the old days, the rule of thumb was to predict failure at 50% of the initial weight
  • What’s the point of those orange SMD tantalum capacitors?
  • On large screw terminal caps, are the screws themselves typically intended to carry current, or just to mechanically tie the cap to the mounting surface (bus bar, PCB, etc.)?
    • Is it important to use aluminum screws to match materials to avoid corrosion from dissimilar metals in high current applications?

Suzana Jankuloska and Ivan Quiroz of KEMET in the Application Intelligence Center

Suzana Jankuloska and Ivan Quiroz of KEMET in the Application Intelligence Center


KEMET screw terminal electrolytics and the inner guts

KEMET screw terminal electrolytics and the inner guts

Special thanks to whixr over at Tymkrs for the intro and outro!