Originally Posted by massivespl
Any idea how old they are
Fair question, unfortunately i don't know exactly. I have had them for around 2 years for a vehicle powertrain project that ended up not needing them. Thus I have never used them.
I purchased them as surplus and expect there from the same place and the same age as many other BCAP 0010 on here.
I bought them expecting to have at least 10 years working life left. Since the measured capacitance and ESR are both still better than the datasheet beginning of life spec, I expect they will achieve that.