How do organic polymer caps compare to liquid electrolytic for reliability

[Perry Babin]

I have a situation where a power supply is commonly abused and the 12v supply caps take a beating. They don't commonly fail but they run hot. I was thinking about going from a liquid electrolytic (Panasonic FC and Nichicon HE) to an organic polymer. The values have been 330uF. I typically use a higher-than-needed voltage to get a lower ESR. The supply is operated from 12v.

If not organic polymer, what would be the caps that could take the most abuse?

[stj]

you can try polymer but the source may not like the super-low esr.
or you can use parallel low-esr electrolytics with a ceramic .1uf cap soldered across the legs to remove high frequency spikes.
this is how early switching psu's where designed before we had low esr caps.

[Perry Babin]

The source is a 12v car battery/charging system that's driving one or more amplifiers that can draw more than 100 amps of current.

Currently, there is a 0.1uf in parallel with the 330uF.

Thanks for the input.

Have you seen the organic polymers cause any problems like failing shorted, or anything else that you wouldn't see with standard electrolytic caps?