Hybrid polymer-aluminium electrolytics give designers the best of both worlds

Cornell Dubilier Electronics (CDE) has released the type HZC hybrid polymer-aluminium electrolytic capacitors. Rated for 125C, type HZC combines the advantages of aluminium electrolytic and aluminium polymer technology. The hybrid capacitors have the ultra-low ESR characteristics of conductive aluminium polymer capacitors packaged in a V-chip, SMT case with high capacitance and voltage ratings that were previously available only in aluminium electrolytic technology. Applications for type 125C hybrid capacitors include a variety of industrial power conversion, lighting control and automotive applications. Capacitance values range from 10µF to 330µF at voltage ratings from 25VDC to 63VDC and ripple current values exceeding 2000mA for some of the larger chip sizes. When operated at their rated temperature of 125C and rated voltage at full ripple current rating, type HZC capacitors have a load life exceeding 4,000 hrs. “The hybrid HZC series gives the design engineer the best of both worlds,” said Bill Haddad, product manager. “Hybrid capacitors utilize a combination of liquid electrolyte and solid polymer giving them high ripple current capability at high capacitance and voltage ratings. They allow the design engineer to use fewer capacitors to meet the capacitance and ripple current demands for their power conversion application."