The BZV85-C3V9.113 is an NPN Darlington transistor manufactured by Nexperia. This device is designed for high-current switching and amplification applications in power circuits. It features a PNP Darlington structure, allowing higher current gain than a standard NPN transistor. This device can be used to switch or amplify AC or DC power signals in digital and analog circuits. Additionally, it is available in a TO-220L-3L package and has a collector current rating of 3A and a maximum voltage rating of 50V.