... capacitor 30KV 1000PF with material N4700 ,TOL:20% Screw Type High Voltage Ceramic Capacitor 30KV 1000PF CT8G30KVS102M Features* ... circuit as measuring boxes, police equipment ,X-ray machine, CT machine and so on medical equipment ,security detecting equipment, ... as long as 10 years .Application :X-ray machine, medical equipment ,electrostatic spray equipment ,welding machine ,HF equipment ,etc.