The R71 Series is constructed of metallized polypropylene film with radial leads of tinned wire. The radial leads are electrically welded to the metal layer on the ends of the capacitor winding. The capacitor is encapsulated in a self-extinguishing solvent resistant plastic case with thermosetting resin material meeting UL 94V–0 requirements. Typical applications include power factor correction and pulse applications. Not suitable for across-the-line application (see Suppressor Capacitors).