I'm trying to find a small supercap for an energy harvesting application, but I can't seem to find one after hours of googling. Loads of pdfs say "Capacitance, 1mF to 100F" or something, but I can never find anything under 5mF. I actually only need about 600uF, but the more the better.
The constraint is that it has to be as small as possible, preferably a coin cell type thing no taller than 2mm, although I imagine that might be pushing it, although maybe not because this one (http://www.farnell.com/datasheets/2024570.pdf) is a good diameter, but is 5mm and 10mF. Non-radial ones are fine, they just have to fit inside a 20mm diameter circle. Thanks for any ideas!