Features: Designed specifically for the backup power requirements of real-time clocks and microprocessors, ensuring that clock chips and critical data can run and be stored continuously and accurately in the event of a main power outage. The large capacitance of 0.47F provides continuous power supply for clock chips for several days or even weeks. Using a rate voltages of 5.5V to ensuring the stability and reliability of the capacitor during charging and operate. Compared to button batteries that require regular replacement, this supercapacitor has an extremely long use. Adopting a standard surfaces mount packaging form, the compact size is very suitable for the design requirements of circuit board in modern electronic devices. Specifications: Model: HCAP-D 5R5 473-F Voltages: 5.5V Vapacity: 0.47F Capacity deviation rate (25°C):>-10% Working temperature ranges: -40℃~ +70℃ Size: 17x17x7mm/0.67x0.67x0.28in Foot distance: 10mm Package Includes: 3Pcs 5.5V 0.47F Super Capacitors note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.