BUY BC550C https://www.utsource.net/itm/p/1862925.html
NPN general purpose transistors
Description: The BC550C is an NPN bipolar junction transistor (BJT) with an integrated collector-base resistor. Features: - Low current (max. 100 mA) - Low voltage (max. 45 V) - High current gain (min. 100) Applications: - Amplifiers - Switches - Low-noise audio amplifiers - High-frequency oscillators - General purpose switching and amplification (For reference only)