Capacitors

[jminassin]

Hi,

I have a technical question about the value of an electrolytic capacitor.  I have a board with a cap that reads
220 u-M.  That cap needs to be replaced.  I have a new cap on hand rated the same voltage and temperature, but the capacitance is designated as 220 uF.  Are these capacitors the same value?

Any help would be appreciated.

Thanks,

John

 

[Paul Birkeland]

Can you post a picture of the cap in question?  You are very likely correct, but stranger things have happened...

 

[jminassin]

PB,  the old capacitor is on the left, the new on the right.

Thanks,

John

 

[Paul Birkeland]

That image is postage stamp sized.

 

[jminassin]

Wow, it looked gigantic on my end.  I'll try re-sizing it.

John

 

[jminassin]

PB,

I apparently grabbed a thumbnail the first time.  Try this.


Thanks,

John

 

[Paul Birkeland]

That indeed looks like a 220uF cap.

If the old cap died, possibly from excess ripple current, I wouldn't put in something physically smaller.  Perhaps consider a 50V or 63V cap as a substitute that's a little more substantial, especially if that new cap you have is a Panasonic FC.

 

[jminassin]

Thanks PB!