Vishay polypropylene film has superior electrical characteristics compared to other dielectrics used. Vishay polypropylene film feature very low dielectric losses, a high insulation resistance, a low dielectric absorption, and a very high dielectric strength. The film provides furthermore an excellent moisture resistance and a very good long-term stability. The temperature coefficient of the material is negative. Polypropylene capacitors are typically used in AC and pulse applications at high frequencies (e.g. fly-back tuning and S-correction). They are further used in switched mode power supplies, electronic ballasts and snubber applications, in frequency discrimination and filter circuits as well as in energy storage, and sample and hold applications.