Panasonic 0.22F Supercapacitor -20 → +80% Tolerance, SD 5.5V dc, Through Hole

Wet type electric double layer capacitors (Gold capacitor) (activated charcoal electrodes with organic electrolyte)
Ideal for IC memory back up (μA range load)
No charge/discharge circuitry required unlike batteries and cannot be over or under charged
Charge/discharge cycles greater than 100000 times
Volumetric efficiency (SD is 30% smaller than SG series, SG is 50% smaller then NF series)
Longer life than a secondary battery
Recommended applications include memory back-up for video and audio equipment, printers, cameras, data terminals, telephones, intelligent remote controls and rice cookers