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Old 22nd December 2002, 01:14 PM   #1
diyAudio Member
Join Date: Apr 2002
Location: Belgrade, Serbia
Unhappy Tantalum capacitor markings

Hello, I need some help.
I can't identify polarity of tantalum capacitors I've bought. Markings look like this:

1  |

These two "vertical minuses" are thicker than + sign, so I'm not shure what's relevant, + for +, or vertical minuses for - like at elco's. Leads are the same lenght.

I know the way for shure identification, but I don't want any firecrackers and it's a damn sunday

Thank you.
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Old 22nd December 2002, 01:59 PM   #2
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MRehorst's Avatar
Join Date: May 2002
Electrolytic caps have the - lead marked, tants the + lead.

The plus lead is the one marked +. The other two lines are not minus marks.

The plus lead is the longer of the two leads, if they are different lengths.

In the picture, the lead on the right is the + lead.

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File Type: jpg tantcap.jpg (15.8 KB, 130 views)
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Old 22nd December 2002, 02:11 PM   #3
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Location: Belgrade, Serbia
Thanx MR.
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Old 29th June 2012, 05:29 PM   #4
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Join Date: Apr 2012
Check out this reference to learn how to connect tantalum capacitors:

Tantalum Capacitor Polarity Markings

It's highly likely that you ignore the vertical - signs and that the plus sign shows the anode of the capacitor.
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Old 29th June 2012, 05:46 PM   #5
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Osvaldo de Banfield's Avatar
Join Date: Dec 2011
Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina
Usually the longer lead is the positive end of the cap.
Osvaldo F. Zappacosta. Electronic Engineer UTN FRA from 2001.
Argentine Ham Radio LW1DSE since 1987.
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