L2SC4617*T1 is a general purpose NPN silicon transistor manufactured by LESHAN RADIO COMPANY, LTD. Its rated maximum collector-emitter voltage is 60V, maximum collector-base voltage is 50V, maximum emitter-base voltage is 7V, maximum collector current is 0.15A, maximum collector power dissipation is 0.15W, maximum working temperature is 150℃, and minimum working temperature is -55℃.