The '/3' indicates a detail specification sheet for a D-subminiature connector that is a plug with pin contacts, general purpose, and solder type. The '-2' specifies a 15-position connector, corresponding to shell size A. The 'F' suffix specifies a Cadmium shell finish, typically with yellow chromate, for Class G connectors. Identifies a United States military standard for D-subminiature connectors, also known as MIL-DTL-24308.