“…6. The offset voltage and breakdown voltage are 0.2 and 1.2 V, respectively, with a very high current gain of ß ¼550 at V CE ¼1.0 V. Compared with the latest literature [11,12] and some former relevant work [3,7], there is a high current gain but poor breakdown voltage. The high ß benefits from the acceleration of electrons, small base thickness and the low doping level in the base, all of which lead to a low carrier recombination in the base region.…”