View 2sc2078 datasheet:

Ordering number:EN462E NPN Epitaxial Planar Silicon Transistor 2SC2078 27MHz RF Power Amplifier Applications Package Dimensions unit:mm 2010C [2SC2078] 1 : Base JEDEC : TO-220AB 2 : Collector EIAJ : SC-46 3 : Emitter Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 80 V Collector-to-Emitter Voltage VCER RBE=150? 75 V Emitter-to-Base Voltage VEBO 5 V Collector Current IC 3 A Collector Current (Pulse) ICP 5 A Collector Dissipation PC 1.2 W Tc=50?C 10 W Junction Temperature Tj 150 ?C Storage Temperature Tstg –55 to +150 ?C Electrical Characteristics at Ta = 25?C Ratings Parameter Symbol Conditions Unit min typ max Collector Cutoff Current ICBO VCB=40V, IE=0 10 µA Emitter Cutoff Current IE