220nF Class X2 capacitor

A metallised polyester suppression class X2 radial capacitor sealed in a protective plastic which is both solvent resistant and flame retardant. A highly reliable, non-inductive wound construction, wide temperature range, very high stability. Approved from CEBEC, CSA, DEMKO, FIMKO, IMQ, KEMA, NEMKO, SEMKO, SEV, UL, VDE Commonly used as a RF suppressor in switch mode power supplies to stop the PSU from injecting RF noise on to the mains circuit. If your old power supply begins to give off smoke this is the most likely cause.