This document describes the features and characteristics of the PBSS2540F, a 40V low VCEsat NPN transistor. It includes low collector-emitter saturation voltage, high current capability, improved thermal behavior due to flat leads, and enhanced performance over SOT23 general purpose transistors. Applications include general purpose switching and muting, low frequency driver circuits, audio frequency general purpose amplifier applications, and battery driven equipment (mobile phones, video cameras, hand-held devices).