Aluminum Polymer Capacitors CDE / Illinois Capacitor Aluminum Polymer Capacitors provide the ultra-low ESR benefits of polymer with greater maximum operating temperature and voltage ratings. One aluminum polymer capacitor can replace up to three aluminum electrolytics due to its low ESR. When compared to other polymer capacitors, these aluminum polymer capacitors are rated at higher temperature (up to +125°C), up to 160WVDC and have greater CV (Capacity x Voltage) values. These capacitors are extremely stable with temperature and provide high-frequency performance. Radial lead and SMD styles are available.