I can tell you if that transistor is the .
VCE(sat)cap V sub cap C cap E open paren s a t close paren end-sub is the tiny voltage drop across the switch. transistor data sheet
Furthermore, data sheets vary by manufacturer. A 2N2222 from one brand might have slightly different thermal resistance characteristics than another. This inconsistency requires the engineer to be vigilant, always checking the specific manufacturer's document rather than relying on generic memory. I can tell you if that transistor is the