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.
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Peter Coghlan
Sent: 30 March 2020 00:56
To: General Discussion: On-Topic and Off-Topic Posts
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
ceramic disc capacitors.