The SCMR18G604SRBB0: Rated at 600 mF capacitance with a 7.5 V working voltage, this supercapacitor stores enough energy for short-duration backup or peak-power buffering in a 5 V or lower rail — the 7.5 V ceiling gives margin above a typical 5 V supply without needing a series stack. The 225 mOhm ESR at 1 kHz sets the maximum instantaneous current the cell can deliver before the internal voltage drop cuts into the usable energy — for a 5 V rail drawing a 2 A pulse, the drop across the ESR is roughly 0.45 V, leaving 4.55 V at the load.
Temperature grade and lifetime — where it survives
The 1000-hour lifetime at 65°C means the capacitor retains its rated capacitance and ESR within specification for that duration at that temperature; at lower ambient temperatures the useful life extends well beyond the 1000-hour figure.
Through-hole package and board integration
Radial can with PC pins on 13.50 mm lead spacing — the 24.00 mm x 8.00 mm body and 19.50 mm seated height fit a standard 0.1-inch grid prototype board or a custom PCB footprint with two 1.0 mm diameter plated holes spaced 13.50 mm apart. The through-hole package reworks cleanly under a soldering iron — no hot-air risk of cooking the can, and the polarity marking on the sleeve is visible after insertion so orientation is hard to miswire.