Split Ceramic Disk Capacitor

[Rob Jarratt]

> -----Original Message-----
> From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Rob Jarratt via
> cctalk
> Sent: 30 March 2020 07:31
> To: 'Peter Coghlan' <cctalk at beyondthepale.ie>; 'General Discussion:
On-Topic
> and Off-Topic Posts' <cctalk at classiccmp.org>
> Subject: RE: Split Ceramic Disk Capacitor
> 
> I don't know, but thanks for pointing out that it might not be a
capacitor.
> I have two more VLCs so I will open them up and see what the markings are,
> the markings on this one are almost illegible.
> 
> Thanks
> 
> Rob
> 
> > -----Original Message-----
> > From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Peter
> > Coghlan
> via
> > cctalk
> > Sent: 30 March 2020 00:56
> > To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at classiccmp.org>
> > Subject: Re: Split Ceramic Disk Capacitor
> >
> > >
> > > Since I am forced to stay at home more than I would like I though I
> > > would check some more PSUs. One I wanted to check was the H7109-C
> > > from one of my VAXstation 4000 VLC machines. I found a leaked
> > > capacitor and some other high ESR ones, so I will replace those.
> > > However, I also noticed a ceramic disk capacitor that appears to be
> > > split all around the edge. Is that a known failure mode?
> > >
> >
> > Is it definately a capacitor?
> >
> > I've had some damaged surge arrestors / MOVs / VDRs that look very
> > similar
> to
> > ceramic disc capacitors.


I have just opened up one of my other VLC machines. The part in question is
marked

.0033M
Z5U

I guess this means a 3.3nF capacitor? Or will it mean 3.3uF?

Thanks

Rob

> >
> > Regards,
> > Peter Coghlan.