Source : Free On-Line Dictionary of Computing

Sun-3 Workstation
     
         A {Unix} {workstation} produced by {Sun
        Microsystems, Inc.} in the 1980s, based on the {Motorola
        68020}.  Successor to the {Sun-2 Workstation}, followed by the
        {Sun-4 Workstation}.  The Sun-3 had a custom {MMU}.  A couple
        of mutant models used an entirely different architecture.
     
        [Details?  Dates?]
     
        (2001-03-11)