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Sorta OT.. I need to replace this cap.. but what kind is it?

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**broken link removed**


the cap:
**broken link removed**


It is "22 microfarad polarized capacitor." or so I am told

(this is for my friend)


I know microfarad is a cap measurement... but what does it mean for a cap to be polorized or not?


And, the reason I am asking this.. is because i need to find a replacement part.

Anyone know what to buy?

Will Ihave to have the exact measurements?

thanks
Lee

Added after 1 minutes:

He also doens't know what voltage this cap is

(also.. this comes off a ATi Radeon 9700 videocard.)

Added after 15 minutes:

Also.. the cap's 2 connectors were broken off.. I was thinking about repairing it. .but it probably wouldn't be as good as getting a new one :/
 

Re: Sorta OT.. I need to replace this cap.. but what kind is

Looking at the second pic its a 22uF cap. Most likely tantalum which is polarized. What that means is that if you install it backwards it will blow up. It can only handle voltage in a specific polarity.
The 20YZ should be the voltage and tolerance.
Since its in a Pc I doubt its higher than 20Volts. Tolerance is not particularly critical.
Go to a online parts distrubitor and order a few caps.
Look for Tantalum, surface mount, 22uF 20V 10%
Package size match is important. Voltage can be higher than 20 but not lower and value should be 22uF
Mouser.com or digikey.com are good sources for parts.
good luck
 

    trend

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Wow!

thanks for all the info!
 

Re: Sorta OT.. I need to replace this cap.. but what kind is

Glad to help.
IF you have a way to measure the cap you can find its body size.
Most SMD parts are going by their maximun body size.
for example a 0805 is .080" x .050", 0603 .060x.030 etc.
Chances are that cap is a 3528 "B" (3.5mm x 2.8mm) or a 6032 "C" (6.0mmx3.2mm)

Why tantalum caps are in metric and other smt parts in inches beats the hell out of me.
**broken link removed**
You might even be able to get a sample or two if you're a good talker. :)
Good luck
 

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