ITT Cannon ZD*A Series High Density D-Sub Connectors with Solder Cup Terminals ZD*A Series high density D-Sub plug and socket connectors with solder cup terminals. These ZD*A HD d-subminiature connectors have a tin plated steel shell, black glass filled thermoplastic UL 94V-0 insulator and size 22D gold plated brass stamped and formed contacts that are intermateable with industry standard d-subminiature connectors. Typical applications for these ZD*A series high density d-sub plug and socket connectors include communication and information systems.