silicon NPN epitaxial planar Transistor(Audio and PPC high voltage Power Supply/ and General Purpose) silicon NPN epitaxial planar Transistor(Audio and PPC high voltage Power Supply, and General Purpose) silicon NPN epitaxial planar Transistor(硅NPN外延平面晶体 4 A, 60 v, NPN, si, POWER TRANsiSTOR, TO-220AB