jbcapacitors blog

Do you understand the difference between Aluminum Electrolytic and polymer electrolytic capacitors?

The biggest difference is that in polymer e-caps, a conductive polymer is used instead of a liquid electrolyte.
Aluminum electrolytic and aluminum polymer capacitors have very good behavior against bias effects of voltage and temperature. Furthermore, aluminum polymer capacitors have very good ageing characteristics. In comparison polymer e-caps offer significant advantages, especially their DC bias performance.

In order to make it easier for you to decide whicj type is better for you, below are the pros for these two types of capacitors:

Pros of Aluminum electrolytic capacitors:
-Higher voltage ratings available (jb Capacitors provide up to 600 Voltage)
-Better leakage current behavior

Pros of Polymer electrolytic capacitors:
-Lower ESR/higher allowable ripple current
-No dry-out behavior (As aluminum e-cap is with liquid electrolyte inside)
-Higher expected lifetime/loadlife