The Doeshare S8550 is a NPN Small Outline Transistor (SOT-23) Bipolar Junction Transistor (BJT) RoHS compliant device. It has a maximum collector current of 500mA, and a maximum collector-emitter voltage of 50V. This transistor is suitable for general purpose switching and amplification. It features low noise, allowing it to be used in audio applications. The SOT-23 package offers improved thermal performance and better board density. It is available in a lead-free, halogen-free, and RoHS compliant package. Additionally, it has a higher temperature rating than the traditional TO-92 package, making it more suitable for high-temperature applications.