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SMT Tantalum Capacitor Code Help

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mr_sd

New Member
Hi there.

I have a Dell XT tablet pc which has just given up on me.

I find when I press down on one of the capacitors on the motherboard, it boots!

I'm thinking faulty capacitor / broken track.

I want to replace the capacitor to be safe but (having never used SMT capacitors before) am unsure of the coding.

The capacitor reads:

]ko[
227
6k
733

The "k" in "6k" has a bar above and below it.

I think this is a 220uF capacitor.

From pictures, I think it is a D Type casing.

I am unsure of the tollerance and voltage ratings though.

Any help would be appreciated.

Also does anyone know any websites in the UK that would stock this.

Kind regards,

Rich.
 

Mickster

Well-Known Member
Most Helpful Member
A dry joint perhaps...a quick re-soldering job may be better than trying to remove and replace the cap.
 

mr_sd

New Member
Yeah, I will give that a go, but I'm more than aware that capacitors are the primaty cause of motherboard failure.

I have found some more details

KO stands for Kemet Organic
227 is 220uf

I think 6k means 6.3v Kemet

733 is the 33rd week of 2007.

Now how do i find the tollerance and the ESR - and will this be important as Kemet have about 6 different types in the same package size.

See http://docs-europe.electrocomponents.com/webdocs/0923/0900766b80923fcc.pdf

Cheers, Rich.
 

eng1

New Member
I think this is a 220uF capacitor.
Correct.

From pictures, I think it is a D Type casing.
The D case has dimensions: 7.3 x 4.3 mm.

I am unsure of the tollerance and voltage ratings though.
'k' usually stays for 10% tolerance.
As far as the nominal voltage is concerned, different manufacturers use different markings. 220uF-10 V is easily available in case D, haven't seen higher values for 220 uF.
 
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