This is a 3.3V to 12V Mini DC-DC Boost Step Up Converter Board Module 5V/ 8V/ 9V 12V Output is a DC-DC Boost step-up converter module that is used to step up the voltage.
The 2SC4835, 2SC-4835, 4835 is a 10V 80mA 150mW Silicon NPN Epitaxial Planer Type For UHF Band Low-Noise Amplification Transistor. Manufactured By NEC Semiconductor.