This note outlines the features, benefits and applications of the Zetex PNP SuperSOT series, plus some additional NPN applications, and follows on from application note AN11 which covered the low voltage variant NPN types FMMT618 and FMMT619.

At first sight the performance of the FMMT618 and FMMT619 transistors may appear unbelievable for SOT23 packaged devices, however the following note describes how this has been achieved.