Question

In transistor base is made very thin why

Answer 1

In most transistors, emitter is heavily doped. Its job is to emit or inject electrons into the base. These bases are lightly doped and very thin, it passes most of the emitter-injected electrons on to the collector. ... One between emitter and the base and other between the base and the collector.

Answer 2

in most transistors, emitter is heavily doped. Its job is to emit or inject electrons into the base. These bases are lightly doped and very thin, it passes most of the emitter-injected electrons on to the collector. ... The collector is so named because it collects electrons from base.