This document provides the absolute maximum ratings and electrical characteristics of the KST4403 PNP epitaxial silicon transistor. It includes information on its operating voltages, currents, power dissipation, and temperature range. Additionally, it provides details on its basic parameters such as collector-base breakdown voltage, collector-emitter breakdown voltage, emitter-base breakdown voltage, base cutoff current, collector cutoff current, DC current gain, saturation voltage, current gain bandwidth product, output capacitance, and turn-on/off times.