5 F, 5.5 V supercapacitor — SCM series radial can
The KYOCERA AVX SCMT22F505PRBA0 is a 5 F supercapacitor rated at 5.5 V, packaged in a through-hole radial can with PC pin termination. It belongs to the SCM series, which targets backup-power and peak-power assist applications where a rechargeable battery is overkill or too slow.
ESR and lifetime — what they mean for the circuit
ESR is 120 mOhm at 1 kHz — this sets the I²R heating under ripple current and the voltage droop during a discharge pulse. For a 1 A pulse, the internal drop is 120 mV before the capacitance itself sags. Rated lifetime is 1000 hours at 65 °C. The 5.5 V rated voltage and -40 °C to 65 °C operating range mean this part is suited to indoor electronics and moderate-temperature enclosures, not engine bays or hot-side industrial cabinets.