View stc945 datasheet:

STC945NPN Silicon TransistorDescription PIN Connection General small signal amplifier CFeatures B Low collector saturation voltage : VCE(sat)=0.25V(Max.) Low output capacitance : Cob=2pF(Typ.) E Complementary pair with STA733 TO-92 Ordering Information Type NO. Marking Package Code STC945 STC945 TO-92 Absolute maximum ratings (Ta=25C) Characteristic Symbol Ratings UnitCollector-Base voltage VCBO 50 VCollector-Emitter voltage VCEO 40 VEmitter-Base voltage VEBO 5 VCollector current IC 150 mACollector dissipation PC 500 mWJunction temperature Tj 150 C Storage temperature Tstg -55~150 C Electrical Characteristics (Ta=25C) Characteristic Symbol Test Condition Min. Typ. Max. UnitCollector-Base breakdown voltage BVCBO IC=50A, IE=0 50 - - VCollector-Emitter breakdown voltage BVCEO IC=1mA, IB=0 40 - - VE

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