2sc4248.pdf datasheet:

2SC4248 TOSHIBA Transistor Silicon NPN Epitaxial Planar Type 2SC4248 TV Tuner, UHF Oscillator Applications Unit: mm (common collector) Transition frequency is high and dependent on current excellently. Maximum Ratings (Ta == 25C) ==Characteristics Symbol Rating UnitCollector-base voltage VCBO 20 VCollector-emitter voltage VCEO 12 VEmitter-base voltage VEBO 3 VBase current IB 15 mACollector current IC 30 mACollector power dissipation PC 100 mWJunction temperature Tj 125 CStorage temperature range Tstg -55~125 CJEDEC JEITA SC-70TOSHIBA 2-2E1AWeight: 0.006 g (typ.) Electrical Characteristics (Ta == 25C) ==Characteristics Symbol Test Condition Min Typ. Max UnitCollector cut-off current ICBO VCB = 10 V, IE = 0 0.1 A Emitter cut-off current IEBO VEB = 2 V, IC = 0 1.0 A Collector-emitter breakd