In summary, KEMET has been manufacturing conductive polymer based surface mount tantalum capacitors (KO-CAP) since 1999. In the last 15 years Kemet has focused on expanding the polymer Ta capacitor portfolio to meet its increasing adoption into circuit designs. Many capabilities have been successfully introduced into the market, such as low equivalent series resistance (ESR) series for decoupling, high voltage series for DC-DC converters and power management, and high energy series for enterprise solid state drives (SSD) applications. A recent application trend of conductive polymer based tantalum capacitors requires high performance in harsh environments. One example is the application in the automotive industry which requires AEC-Q200 qualification. Amongst all of the AEC-Q200 requirements, the most challenging one for polymer tantalum capacitors with traditional technology is the highly accelerated test under 85°C / 85% relative humidity (RH) with DC bias up to rated voltage for 1000 hours.