Polymer capacitors have a number of benefits when compared to other technologies or even their MnO2 counterparts. When comparing Polymers to MLCCs and Aluminum Electrolytic capacitors, Polymers exhibit favorable characteristics for capacitance over voltage, temperature, time and frequency. When comparing the capacitance vs applied voltage, a polymer capacitor’s capacitance will remain fairly stable while a class II or III MLCC such as an X7R will exhibit a drop in capacitance known as the DC bias effect. A Polymer capacitor’s capacitance will also remain stable over temperature and time when compared to both MLCCs and aluminum electrolytics. Class II and III MLCCs have a certain allowable change in capacitance over temperature called temperature coefficient of capacitance and they exhibit a capacitance loss per decade hour of use also known as aging. Aluminum electrolytic capacitors have a steep loss of capacitance at very low temperatures usually below – 40°C and due to dry out exhibit a loss in capacitance over time. Polymer capacitors show very little changes in capacitance over temperature and time.