[GreenKeys] Plantronics tantalums

Larry Tighe larryradio at att.net
Sat Nov 13 12:46:16 EST 2010


Subject: Re: [GreenKeys] Plantronics tantalums


> Dipped tantalum capacitors from the late 1970s and early 1980s have a
> particularly poor reputation for reliability, and now fail frequently.
========================================================

I'm a bit confused on reading the value of the two failed tantalums. 
According to wikipedia,
"In some cases (often when µF is not printed), the value (in pF) is encoded 
with three numbers; the first two digits being the significant figures, with 
the third being the multiplier (i.e. number of zeros)."

My "guess" is that the tantalum marked 226, therefore, is 22 uuf.  The 15K 
below the 226, I presume, is 15 working volts.  Any opinions on this would 
be appreciated so I can order up replacements.

Thanks to all for the discussion on tantalums.

lar
K2JIA 



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