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Tantal capacitor polarization

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mario

Jan 1, 1970
0
Hello,

I have recently bought two tantal capacitors. The problem is, I have no idea which pin is "+" and which is "-". The "+" sign is in the middle! Now, I asked the guys working in the shop, and they were just as puzzled as I am, and couldn't say for sure which lead is positive.

Check out the picture and tell me what you think. I marked the two leads with A and B, and tell me what you think should be the positive.



The reason I would like to know is, tantal capacitors have a tendency to fail, sometimes with an explosion, if polarized incorrectly for a sustained period of time. Obviously, I don't want this to happen.

thanks in advance


mario
 
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