Shell: material (SPCC), the surface characteristics of thick gold plating: product abrasion resistance and beautiful appearance, good electrical conductivity, high hardness, good elasticity and long service life, high temperature resistance. Terminal : the material is phosphor copper, terminals and welding all gold plating feet 3U characteristics of good elasticity, wear-resisting, low contact resistance. Rubber core : is made of PBT material, characteristics of high temperature resistance, high insulation performance. Use the product 300 high temperature when welding deformation, sparkling. The electrical properties : 30 v AC rated voltage: 1 amp The insulation resistance: 500 m Ω Min Contact resistance: 30 m Ω Max Withstand voltage: AC 500 v R.M.S USES : for printers and other digital peripheral products