1.Size: 16V series,30V series,60V series,72V series, 2.PPTC-Polymeric Positive Temperature Coefficient Thermistor 3.Wide range of protection thresholds from super tweeters to midrange and compression drivers 4.UL,TUV,CSA approved. Independently certified by SGS as RoHS compliant **************************************** 1.Radial leaded devices 2.Cured,flame retardant epoxy polymer insulating material,meets UL 94 V-0 requirements 3.All products are lead-free 4.Lead materials: Tin-plate metal wire