Ceramic capacitor question

From: Peter C. Wallace <pcw_at_mesanet.com>
Date: Tue Jan 8 11:31:56 2002

On Tue, 8 Jan 2002, Peter C. Wallace wrote:

> On Tue, 8 Jan 2002, Pat Finnegan wrote:
>
> >
> >
> > On Tue, 8 Jan 2002, Kent Borg wrote:
> >
> > > The voltage is something you merely need to meet, exceeding it is OK.
> > > Assuming everything else matches, I'd go with the "104Z at 50V".
> > >
> > >
> > > -kb
> > >
> >
> > Quick lesson in capacitor markings:
> >
> > The number '104' indicates the capacitance, with the first two digits '10'
> > being the 'mantissa' or value and the last digit being the exponent.
> > Ceramic (and other caps marked like this) are all rated in pF or 10^-9 F.
> > Therefore, this cap is 10x10^4pF or 100,000pF, or 0.10uF. The other
> > capacitor, 224Z, would be 0.22uF (22x10^4pF). The 'Z' specifies a
> > temperature range (IIRC) or something else that is not terribly important
> > for most applications.
> >
> > -- Pat
> >
> >
>
> A few minor additions
>
>
> pf = 10^-12 F (10 ^-9 uF)
Oops should be (10 ^-6 uF)

Peter Wallace
Received on Tue Jan 08 2002 - 11:31:56 GMT