View 2sc4543 e datasheet:

Transistor 2SC4543 Silicon NPN epitaxial planer type For video amplifier Unit: mm 1.5± 0.1 4.5± 0.1 1.6± 0.2 Features High transition frequency fT. Small collector output capacitance Cob. 45° Wide current range. 0.4± 0.08 0.4± 0.04 0.5± 0.08 1.5± 0.1 Absolute Maximum Ratings (Ta=25?C) 3.0± 0.15 Parameter Symbol Ratings Unit 3 2 1 Collector to base voltage VCBO 110 V Collector to emitter voltage VCER*1 100 V marking Collector to emitter voltage VCEO 50 V Emitter to base voltage VEBO 3.5 V Peak collector current ICP 300 mA 1:Base 2:Collector EIAJ:SC–62 Collector current IC 150 mA 3:Emitter Mini Power Type Package Collector power dissipation PC*2 1.0 W Marking symbol : 1F Junction temperature Tj 150 ?C Storage temperature Tstg –55 ~ +150 ?C *1 REB = 1.2k?