This document describes the features and characteristics of the SMA4036 NPN Darlington transistor, including IC-VCE characteristics, hFE-IC characteristics, hFE-IC temperature characteristics, VCE(sat)-IC temperature characteristics, VCE(sat)-IB characteristics, IC-VBE temperature characteristics, θj-a-PW characteristics, PT-Ta characteristics, and Safe Operating Area (SOA). It also includes the absolute maximum ratings, equivalent circuit diagram, and electrical characteristics of the SMA4036.