Energy storage for backup and pulse loads
The KYOCERA AVX SCMR18C105PRBA0 is a 1 F supercapacitor rated at 5 V in the SCM series, housed in a through-hole radial can with PC pin termination. Its 200 mOhm ESR at 1 kHz sets the internal resistance that governs charge/discharge efficiency and peak current delivery — a critical parameter for sizing the capacitor in a power-hold or pulse-load circuit where the voltage droop during discharge must stay above the downstream regulator's dropout. The 0%, +100% capacitance tolerance is standard for supercapacitors and means the actual capacitance can be up to double the nominal 1 F. System energy budgeting should use the minimum capacitance at end-of-life and worst-case temperature to guarantee hold-up time; the positive-only tolerance is a safety margin on the high side, not a risk of under-capacity.
Temperature range and lifetime derating
Operating from -40°C to 85°C, this supercapacitor covers industrial control cabinets, outdoor telecom enclosures, and automotive cabin environments. The lifetime is specified at 1000 hours at 65°C — a standard accelerated-test condition. In practice, continuous operation at 85°C will reduce life significantly below that figure; designs with sustained high ambient temperature should derate the voltage or add a thermal margin to stay within the wear-out ceiling. The 0.453-inch (11.50 mm) pitch matches standard 0.2-inch grid prototyping boards, simplifying breadboard evaluation before PCB layout.