The CBB capacitor is a polypropylene capacitor, in which a metal foil is used as and electrode, and a polypropylene film is stacked from both ends and then wound into a cylindrical structure. Characteristics include: non-polar, high insulation resistance, excellent frequency characteristics, and low dielectric loss.
CBB (polypropylene) capacitors exhibit very little change of capacitance with time and voltage applied, making them ideal for applications where a stable level of capacitance is needed. It is found that the temperature coefficient is low, negative and virtually linear.
CBB capacitors find uses in many areas of electronics: Circuits with high peak current levels; High frequency resonant circuits; Premium audio applications where many enthusiast believe they offer better performance and hence a better sound quality; High frequency pulse discharge circuits, and energy storage circuits; their high resistance enables low levels of self-discharge.