470 mF energy buffer for a 6 V rail
The SCMR14H474PRBB0 is a 470 mF supercapacitor rated at 6 V from KYOCERA AVX's SCM series. That capacitance at this voltage stores roughly 8.5 J — enough to ride through a brief power dropout or supply a peak current burst a battery cannot source without sagging. The 380 mOhm ESR at 1 kHz governs how fast the cap can deliver that energy. For a 1 A pulse, the internal drop is 380 mV — the load sees 5.62 V from a 6 V rail. This ESR also sets the self-heating during charge/discharge cycles; keep the RMS ripple current below the cap's thermal budget to stay within the 1000-hour lifetime at 65°C.
Through-hole radial can — board integration
The 0.453-inch (11.50 mm) lead spacing matches a standard 0.100-inch grid, so it drops into a two-hole footprint on a single-sided board without requiring a custom pad pattern. PC pin termination — the pins are tinned copper, designed for wave or hand soldering. The bulk packaging means each unit is individually handled; no tape-and-reel for automated pick-and-place.
Temperature window and lifetime trade-off
Rated for -40°C to 65°C operating ambient. The 1000-hour lifetime at 65°C is the accelerated test condition — at 45°C the expected life roughly doubles per 10°C drop (Arrhenius rule of thumb for supercaps). Above 65°C the electrolyte degradation accelerates non-linearly; derating the applied voltage below 6 V extends life at elevated temperatures. The 0%, +100% tolerance is standard for supercapacitors — the actual capacitance can be anywhere from 470 mF to 940 mF. Design the hold-up time or pulse energy budget around the minimum (470 mF) to guarantee the circuit works across the full tolerance spread.
Active lifecycle — sourcing posture
The SCM series is a current-production family; no successor or cross-reference is needed.