BETAMJ2955PNP metal-can power transistor
A controlled current path, with every terminal identified.
MJ2955 is a PNP power transistor in a metal TO-204AA (TO-3) package. The two insulated leads are base 1 and emitter 2; the metal case itself is collector. Both mounting contacts share that collector connection. The 15 A collector rating is an absolute limit. Usable current also depends on base drive, safe operating area and heat removal. The pin diagram explicitly shows the bottom view, while the authored PCB pattern uses the top view. The example switches a modest 12 V, 100 Ω load with a buffered driver. Calculated readings assume 0.8 V base-emitter and 0.2 V collector-emitter magnitudes, not guaranteed voltage drops. Only the verified metal package is offered.
