This chart shows a comparison of the ripple voltage elimination ability in the temperature range of 25°C to -20°C. Conductive polymer capacitors showed no change in ripple elimination ability at low temperature. The aluminum electrolytic capacitor’s ripple value tripled at -20°C. This phenomena is dependent on the capacitors’ impedance characteristics. The big difference in the test results is because aluminum electrolytic capacitor’s impedance increases at low temperature, and conductive polymer capacitors have nearly no change in impedance. Conductive polymer capacitors are clearly the best solution for applications used in environments with a wide range of temperatures.