The S9013 (Youtai) is a 3-pin Transistor SOT-23-3 with NPN/PNP technology. It is RoHS compliant and manufactured by Youtai, a Chinese manufacturer. It is a bipolar transistor, with a current gain (hFE) of 40-300, and a voltage of 40V. It is commonly used for switching and amplifying electronic signals. It has a low collector-to-emitter saturation voltage, making it ideal for use in low-power circuits. This transistor is capable of handling high frequency signals up to 100MHz, with a response time of 50ns. It also has excellent linearity, making it suitable for smaller analog applications. The S9013 has a low power dissipation of 500mW and can be used for a variety of applications including switching power management devices, low noise amplifiers, signal amplifiers, and logic circuits.