CBB capacitors cannot be used in common with CD capacitors. The capacitors of CBB are polypropylene capacitors, CD capacitors are electrolytic capacitors, electrolytic capacitors have positive and negative electrodes, and CBB has no positive and negative electrodes. In addition, even if two more CBB or CD capacitors are not necessarily universal, because the capacitor has two important indicators, that is, the capacitance and the voltage withstand of the capacitor, when the capacitor is the same model specifications the same capacity and voltage can be interchanged.