The 500C capacitor is designed for mainframe computers and other long life UPS and power supply filter applications. They deliver nearly as much capacitance as the Type DCMC capacitors, but with two times the life expectancy. The extended cathode foil of the 500C assures cool operation with heat flow from the capacitor element to the can. CDE's standard dipped silvered mica capacitors are the first choice for timing and close tolerance applications. When you need to count on stable capacitance over a wide temperature range, stability and the CD Standard Dipped Mica Capacitor go hand-in-hand.