It is used for filtering. CBB capacitor has good high-frequency characteristics, good filtering effect and small size. The medium is a solid electrolytic capacitor and the medium is an electrolyte. Filtering can be used, depending on the occasion, usually choose to replace each other.
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CBB capacitors, also known as polypropylene capacitors, insulating material is polypropylene, a non-polar capacitor, the capacity is generally not large, in 10p--10μ, rated voltage: 63-2000V, small volume, mainly used for high requirements of the circuit such as audio, instruments and so on.