100 µF at 4 V — the rail cap for tight spaces
The 1.3 Ohm ESR tells you it handles moderate ripple on a 3.3 V or 1.8 V rail without cooking itself — think decoupling a POL converter or bulk storage on a sensor node.
Active production — no obsolescence clock ticking
That covers avionics, downhole tools, satellite bus power, and any outdoor telecom cabinet that sees a January night in Manitoba and an August afternoon in Arizona.
Surface-mount 2312 — size code W
Package is 2312 (6032 Metric), 6.00 mm x 3.20 mm footprint, 1.50 mm seated height. The W size code is a standard low-profile body — fits under a mezzanine card or on a dense PCB backside without clearance issues.