The MMBTA05 with SOT-23 Bipolar Transistors - BJT ROHS is a type of three-pin small outline transistor manufactured by Fuxinsemi. It is designed for use as a transistor with its two main terminals, the base and collector, and the emitter. The device is optimized for low power applications with a minimal current requirement. It can be used as an amplifier, oscillator, and switch, and is suited for all types of digital circuits. It has a maximum collector current of up to 200mA, a collector voltage of 100V, and an operating temperature range between -55 degrees and 150 degrees Celsius. Additionally, it has a low noise factor, making it ideal for use in noise-sensitive applications. Its design offers good stability and high frequency performance, while its low noise makes it suitable for use in communication systems.