30 F backup or burst capacitor for 2.7 V rails
The KYOCERA AVX SCCU30B306MRB is a 30 F supercapacitor from the SCC series, rated at 2.7 V with a ±20% tolerance. This capacitance and voltage combination stores roughly 109 J of usable energy — enough to ride through a 100 ms power glitch at 1 A or supply a 2 A burst for 50 ms before the rail drops below the downstream regulator's minimum input. The radial through-hole can with 0.295" (7.50 mm) lead spacing and PC pin termination fits standard 0.1" grid prototyping boards and production PCBs alike. The 0.630" diameter (16.00 mm) and 1.260" seated height (32.00 mm) dictate a keep-out zone that clears adjacent tall components — plan for clearance above the can vent.
Lifetime and temperature envelope
Rated for 1000 hours at 60°C, the SCCU30B306MRB's lifetime doubles for every 10°C drop below that temperature — at 50°C expect roughly 2000 hours, at 40°C about 4000 hours. The full operating range spans -40°C to 65°C, so the capacitor functions in unconditioned indoor enclosures and moderate outdoor cabinets, but sustained exposure above 60°C accelerates the end-of-life curve significantly.