# What do multiple emitters/collectors imply in a BJT schematics symbol?

I sometimes come across with BJT symbols from which multiple lines come out of emitter or collector. Are such BJTs different kind of devices? What does it mean in solid-state level?

Multiple emitter bjt's do not conduct only if all the $V_{BE}$ are below $V_\gamma$, it is a sort of wired AND. Multiple collector bjt's collectors total current is set as usual by $I_B$, and if all the collectors are the same size (area at silicon level) the current is equally split.
Multi collector bjt's are useful in IC's since it is easy to match the ratio between the collector areas and split a polarizing current in precise ratios, as in the uA741 output stage polarization ($Q_{13}$ here):