The KTC1027 NPN transistor with 800mA 120V rating by Blue Rocket is designed with a TO-92LM shape and is RoHS compliant, meaning it contains no hazardous substances that would harm the environment. The part is composed of three leads, the emitter, collector, and base, and operates with NPN type bias. This transistor is designed to switch or amplify electrical signals, and is suitable for many applications where low current gain is required, such as amplifiers, switches, and signal protection.