Conventional tantalum capacitors (MnO2 tantalum capacitors) are characterized by low equivalent series resistance (ESR), high ripple rejection ability and long lifespan, which can effectively reduce the ripple voltage in the circuit. The stability of polymer tantalum capacitors with temperature, voltage and time is higher than that of MLCC. Tantalum capacitors are not only widely used in military communication, aerospace and other fields, but also in industrial control, film and television equipment, communication instruments and other products.