CBB21-B are non-inductively wound with metallized polypropylenefilm as the dielectric/electrode with copper-clad steel leads andencapsulated in a plastic case ealed with epoxy resin,the identicalouter appearance,very low loss at high frequency,suitable for highcurrent.High insulation resistance,long life due to self-healingeffect.Widely used in high frequency ,DC,AC and pulse circuits.