View 2sc4915 datasheet:

2SC4915 TOSHIBA Transistor Silicon NPN Epitaxial Planar Type 2SC4915 High Frequency Amplifier Applications Unit: mm FM, RF, MIX, If Amplifier Applications • Small reverse transfer capacitance: Cre = 0.55 pF (typ.) • Low noise figure: NF = 2.3dB (typ.) Maximum Ratings (Ta = = 25°C) = = Characteristics Symbol Rating Unit Collector-base voltage VCBO 40 V Collector-emitter voltage VCEO 30 V Emitter-base voltage VEBO 4 V Collector current IC 20 mA Base current IB 4 mA Collector power dissipation PC 100 mW Junction temperature Tj 125 °C JEDEC ? Storage temperature range Tstg -55~125 °C JEITA ? TOSHIBA 2-2H1A Weight: 2.4 mg (typ.) Electrical Characteristics (Ta = = 25°C) = = Characteristics Symbol Test Condition Min Typ. Max Unit Collector cut-off curre