Re: Capacitance HELP

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Regarding alpha characters, I found the following on the web.

BTW, here's a decent website on the subject
http://xtronics.com/kits/ccode.htm

Symbol   Tolerance
------   ---------
 B       +/-  0.1  %
 C       +/-  0.25 %
D & E     +/-  0.5  %
 F       +/-  1  %
 G       +/-  2  %
 H       +/-  3  %
 J       +/-  5  %
 K       +/- 10  %
 M       +/- 20  %
 N       +/-  0.05 %
 P      +100, - 0 %  Z       +80, -20 %

Take care,
Bart

Tesla list wrote:

> Original poster: BunnyKiller <bunikllr@xxxxxxx>
>
> while we are on the subject....
>
> lets see if someone can explain the numeric code on very small ( 
> physical size) caps....
>
> for example  what is the value of a ceramic cap with     "560"  as 
> the only marking on it    or  "100K   1KV"
>
> good thing I have a cap meter  but having to test 30 caps to find 
> the one I need is a pain...
> some of the numerics dont even make sence to me from the meter reading test...
>
> Scot D
>
>
>
> Tesla list wrote:
>
> > Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
> >
> > Hi Al,
> >
> > You got most of it right.
> >
> > f  = farads
> > uf = microfarads (10^-6)
> > nf = nanofarads  (10^-9)
> > pf = picofarads  (10^-12)
> > tf  = themptofarad (10^-15)  used in IC design  (hope spelled right)
> >
> > MFD is also microfarads.  I dont remember ever hearing of 
> > capacitance expressed in millifarads so I suspect MF is also 
> > microfarads (just not sure on this one).
> >
> > 1000 tf = 1 pf
> > 1000 pf = 1 nf
> > 1000 nf = 1 uf
> >
> > 1000000 tf = 1 nf
> > 1000000 pf = 1 uf
> > 1000000 uf = 1 f
> >
> > Hopes this helps,
> >
> > Gerry R.