No, I have in a follow-up post in this thread, that the graph ends at
50V but I need to know higher. Oscons don't get into that range much.
I need to replace an electrolytic that was used so far because it's too large and also prone to failure. Total 100uF/100V, although in a pinch we could scrape by with a 63V rating if we zener any larger excursions than 55V or so. High pulsed load, easily two amps. Hi-rel application meaning stress fracture is an issue with very large SMT footprints. I don't want to get up to 2220, better stay with 1812. Height restriction
2.5mm or just under 0.100".Nominal voltage is 50V but we have to (ideally) allow excursions up to
70V because this is the only capacitance at the end of a cable that can easily be 250ft long in some situations.If X7S really drops by around 50% as I have a hunch it will then we'll have to see if the remaing 50uF is going to be enough. X7R in 2220 would be better but we can't really fit that many, plus the stress fracture issue. So, the classic situation of being between a rock and a hard spot.