Does anyone have an opinion, comments or data to support a rumor I heard?

I'm told that tantalum caps can fail shorted if required to supply a current
surge.  To prevent this failure aluminum electrolytics are preferred on digital
boards.

I thought Aluminum electrolytics weren't very stable in capacitance over temp
and were not preferred to tantalum for that reason as well as size (more
Capacitance per volume in Ta than Al).

Gary P.
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                                  Gary D. Peterson
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