From: tnp@invalid.invalid

On 01/02/2026 03:43, Rich wrote:
> In comp.os.linux.misc c186282  wrote:
>>    They ARE popular - and good. Not SURE why tantalum
>>    is SO much better than, say, aluminum however.
>
> They provide a higher capacitance per unit volume, and a significantly
> lower equivalent series resistance (ESR) (~ 10x lower), than aluminum
> electrolytic capacitors.
>
> The very low ESR make them more useful for high frequency filtering
> than aluminum electrolytics.

In my day they were the ONLY [electrolytic] capacitor rated for +125°C
operation. They could also withstand a bit of reverse voltage

We used nothing else in avionics


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