NPN 15A 60v 115w General Purpose Power Transistor. TO-3 Package. Used in many applications such as Atari Audio Regulator II and III boards, Qbert power supplies. This 2N3055G can replace the following 48S137368, 48S137634, 7634, 7652, VU7416440, A8U, A8W, 2N3442 and NTE130. We have tested the 2N3055 in the Matsushita monitor chassis voltage regulator at Q801 to replace the original 2SD692 and 2SC1629A and the 2N3055 works great to replace them on that monitor.