Hold-up energy for backup and peak-power
The SCCR20B335PRB is a 3.3 F supercapacitor from the KYOCERA AVX SCC series, rated at 2.7 V with a 95 mOhm ESR at 1 kHz. It stores enough energy to maintain a real-time clock or SRAM for several minutes through a power interruption, or to supply a peak current burst for a wireless module transmit cycle without drawing from the main rail. The 0%, +100% tolerance on capacitance means the part is guaranteed to deliver at least 3.3 F — the upper margin is a reliability buffer, not a design spec.
Radial can, through-hole fit
Packaged in a radial can with through-hole PC pins on a 3.50 mm lead spacing. The 8.00 mm diameter and 22.00 mm seated height fit a standard 0.3-inch pitch board layout — no custom footprint needed. Bulk packaging means the part ships loose in a bag, not on a reel; plan for manual or tube-fed insertion.
Temperature and lifetime envelope
Rated for -40°C to 65°C operating range — wide enough for outdoor telecom cabinets or industrial enclosures that see seasonal swings. Lifetime is 1000 hours at 60°C, which is the accelerated test condition; at 25°C ambient the useful life extends well beyond that, but the 60°C figure is the one to budget against if the part sits near a hot regulator or motor drive.