ALH Metallized Polypropylene Film Capacitors Cornell Dubilier (CDE) ALH Metallized Polypropylene Film Capacitors are filtering capacitors that use advanced construction technology to meet the challenges of harsh environments. The series offers 50% greater life than competitive 85/85 THB-rated power film capacitors with designs that pass the rigors of automotive-grade electrical and mechanical testing. CDE ALH capacitors offer a 160VAC to 450VAC rated voltage range and provide self-healing and low loss. The series is suitable for high-frequency applications.