HZC SMT Hybrid Polymer Capacitors Cornell Dubilier HZC SMT Hybrid Polymer Capacitors combine solid polymer aluminum technology with wet aluminum electrolytic technology. This combination produces a surface mount capacitor with a 4000-hour life, low leakage current, high voltage capability, very low ESR and small case sizes. Cornell Dubilier HZC Capacitors are ideal for high temperature and high reliability PC board designs. The vertical cylindrical cases facilitate automatic mounting and feature high reflow soldering temperature capability. The HZC series is RoHS compliant.