I remember reading somewhere, years back, that tantalum capacitors are sensitive to heating on their negative terminals and using more than a minimal amount of heat could result in damage. Is this/was this ever true?
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No idea on that one, but I have only read that Tantalum caps are extremely sensitive to even the slightest of reverse voltage and can easily short-out afterwards. -
unlikely,
firstly why the negative?
second, we have SMD tantalums now.
they hate reverse polarity though - even short spikes can wreck them.
always overate the voltage by atleast 100% if you can.
so for a 12v rail DONT use 16v caps - put 25v caps inComment
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The positive terminals are welded, internally. The negative terminal's internal connection varies. I've seen conductive epoxy, solder, silver adhesive... If this problem is new to those who frequent this forum, it's likely not an issue in real world use. I think what I read was for hand soldering.Comment
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There are several different tantalum capacitors - dipped/bead, solid, wet-slug, SMD. Then there is their construction, the seal on the anode for the can types - usually glass for hermetic MIL types.
Never heard or seen issues about soldering them, maybe there was a period of using a plastic for a seal on a wet cap?
Today, they take wave and reflow soldering no problem.
https://=https://www.vishay.com/docs...capsbasics.pdfComment
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