RE: Capacitance HELP

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Mark Dunn" <mdunn@xxxxxxxxxxxx>


Scot:

The first two digits are the value and the third digit is the number of
zeroes(expressed in pF).  So your 560 is 56 pF.  If it was 562 it would
be 5600 PF or 5.6 nF.

Watch out, seems to me if there is a letter after the number it changes
the range.


Mark R Dunn, P.E.
Engineering Manager
Wm. W. Meyer & Sons, Inc.
847-673-0312 x244

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Monday, January 16, 2006 7:55 AM
To: tesla@xxxxxxxxxx
Subject: Re: Capacitance HELP


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.
>