I do not know of this diode - and can not find a DS 0 two companies I know of doing HV Diodes are CKE ( http://www.deantechnology.com/pg_home/home.aspx ) and OCRAM in Italy (http://www.ocramitaly.it/en/high-voltage-rectifiers-up-to-180-kv.html ) -
I am sure there are others - these are just the two I know of off the top of my head.