The 2SA1186 is a NPN bipolar transistor manufactured by SPTECH. It is housed in a TO-3PN RoHS package, making it a highly reliable device with a superior heat dissipation rate. This transistor is designed for use in switching applications, and features a collector-emitter voltage rating of 80V, with a DC current gain of 150 at 1A collector current. It also has an integrated collector-base breakdown voltage of 6V and a maximum collector-emitter saturation voltage of 1V. Its maximum power dissipation is 25W, making it suitable for wide-range applications. In addition, it is also RoHS compliant, ensuring greater reliability and longevity in operation.