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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