Tantalum capacitor polarization?

Puffin · 6th September 2008, 08:00 AM

Is the right leg of both of these tants+

ratza · 6th September 2008, 08:26 AM

Yes.

Nuuk · 6th September 2008, 01:04 PM

Not a stupid question Puffin, but a silly thread title!

Remember when the next person comes looking for an answer to the same question, it helps to be able to see the subject in the thread title. "Stupid question" doesn't tell us anything but "Tantalum capacitor polarity question" speaks volumes!

Puffin · 6th September 2008, 01:20 PM

Got you curious though, didn't it!

bichi · 6th September 2008, 09:25 PM

Correct, right legs in your pictures are positive (+) leads.
- most tantalum capacitor marking/bar indicate positive (+) lead
- which is opposite to most aluminum electrolytics, where marking/bar indicate negative (-) lead

Typical dipped tantalum marking, lifted from KEMET literature below.

See page 63, KEMET dipped tantalum:
http://www.kemet.com/kemet/web/homep...570A50016090E/$file/F3100_TaDipRad.pdf

ps: no such thing as a stupid question...

Puffin · 6th September 2008, 10:10 PM

Thanks Guys.

AndrewT · 8th September 2008, 04:18 PM

Puffin,
Yes, stupid thread title!
Go and ask, nicely, if the mods will retitle your thread for us.

BWRX · 8th September 2008, 04:53 PM

That sounds better, no?

timpert · 8th September 2008, 04:58 PM

Just my 2 cents here:

In many electronic parts, the longer lead is the positive lead (provided that they are unclipped). This is true for both tants and normal electrolytics.

Better be safe than sorry: tants can pop nastily if they are connected in reverse polarity, so there's no need to be ashamed for checking before mouting them!

Nuuk · 8th September 2008, 05:09 PM

If only the rest of the world was so easy to put right!

6th September 2008, 08:00 AM	#1
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Stupid Question Is the right leg of both of these tants+

6th September 2008, 08:26 AM	#2
ratza diyAudio Member Join Date: Dec 2007 Location: Sibiu, Romania	Yes. __________________ Any solution is a compromise.

6th September 2008, 01:04 PM	#3
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Not a stupid question Puffin, but a silly thread title! Remember when the next person comes looking for an answer to the same question, it helps to be able to see the subject in the thread title. "Stupid question" doesn't tell us anything but "Tantalum capacitor polarity question" speaks volumes! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

8th September 2008, 04:53 PM	#8
BWRX diyAudio Moderator Emeritus Join Date: Jan 2005 Location: Pennsylvania	That sounds better, no? __________________ Brian

8th September 2008, 05:09 PM	#10
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	If only the rest of the world was so easy to put right! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.


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6th September 2008, 01:20 PM	#4
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Got you curious though, didn't it!

6th September 2008, 10:10 PM	#6
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Thanks Guys.

8th September 2008, 04:18 PM	#7
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Puffin, Yes, stupid thread title! Go and ask, nicely, if the mods will retitle your thread for us.

8th September 2008, 04:58 PM	#9
timpert diyAudio Member Join Date: Nov 2004 Location: Netherlands	Just my 2 cents here: In many electronic parts, the longer lead is the positive lead (provided that they are unclipped). This is true for both tants and normal electrolytics. Better be safe than sorry: tants can pop nastily if they are connected in reverse polarity, so there's no need to be ashamed for checking before mouting them!

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