1 F at 5 V — energy storage for hold-up and peak-power buffering
The KYOCERA AVX SCMR18C105PSBA0H is a 1 F supercapacitor rated at 5 V, part of the SCM series. With a 250 mOhm ESR at 1 kHz, it delivers moderate charge/discharge efficiency for applications like RTC backup, power-fail hold-up, or peak-current buffering in low-power systems.
Tolerance and lifetime — design for the worst case
The 0%, +100% tolerance means the actual capacitance can range from 1 F up to 2 F. For a hold-up time calculation, use the minimum 1 F to guarantee the backup duration; the extra margin on the high side only improves performance. Rated lifetime is 1000 hours at 65°C. At lower operating temperatures the life extends — at 45°C the expected life roughly doubles per 10°C drop below the rated temperature, following the Arrhenius acceleration typical for electrolytic-type supercapacitors. The ESR increases at low temperature, so the voltage droop during a cold-start pulse will be larger than at room temperature.
Through-hole radial footprint
Lead spacing is 11.50 mm, fitting standard 0.2-inch pitch prototyping boards. The PC pins are tin-plated for solderability.