Solid and wet tantalum capacitors are known for their excellent energy density and reliability, with wet tantalum performing well at higher temperatures. The development of tantalum polymer capacitors, which require much lower voltage derating, has expanded their usable capacitance and voltage capability, resulting in fewer capacitors needed or a smaller footprint. Comparing Solid Tantalum and Polymer Tantalum CapacitorsPerformance and reliability are the foundation for any equipment. Understanding usage conditions and the reasons for derating capacitors simplifies your decision-making when comparing capacitor technologies. Operating solid tantalum capacitors at or above their rated voltage (RV) can lead to damage and catastrophic failure, making voltage derating crucial for device reliability.