Re: [uCsimm] The red 10uF tantalum capacitor

From: D. Peter Siddons (siddons@bnl.gov)
Date: Tue Feb 27 2001 - 09:20:34 EST


Stu,
   No, this MUST be connected the right way round. It is a solid
tantalum
capacitor. I have seen these explode quite spectacularly when
reverse-biased!
Pete Siddons

Stu wrote:
>
> On my Gardener, the writing on the capacitor faces towards the DB9
> connector. However, it looks a lot to me like this is a ceramic disc type
> capacitor, in which case polarity is irrelevant. Then again, the shape is a
> little unusual for a disc type capacitor, so I could be wrong.
>
> > -----Original Message-----
> > From: owner-ucsimm@uClinux.com [mailto:owner-ucsimm@uClinux.com]On
> > Behalf Of Jonathan J.
> > Sent: Monday, February 26, 2001 10:32 PM
> > To: uCsimm@uClinux.com
> > Subject: [uCsimm] The red 10uF tantalum capacitor
> >
> >
> >
> > I don't know if this is appropriate for this list, but before I solder
> > the uCgardener board together, I have a question about the above
> > component, as warned "The red 10uF tantalum capacitor mst be oriented with
> > the anode (marked with a + and a vertical stripe) facing the center of the
> > PCB and the unmarked side closest to the Rj45 connector"
> >
> > I am a bit confused reguarding this, as I when I face the side of the
> > capacitor with the strip towards the PCB, the unmarked side does not face
> > the RJ45 connector, the link is to a gif which I think shows the WRONG way
> > to orient the capacitor,
> >
> http://www.snickers.org/~davis/10ufTantalumC.gif
>
> This way, the capacitor faces the PCB, and the unmaked back of it faces
> the DB9 serical connector, but then, the side with the stripe is closest
> to the RJ45. Help?
>
> thanks,
> --
> :.. .. : ...... : . .. . : . :
> jonathan j. davis@snickers.org /~davis/index.html
>
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>
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