TOSHIBA Transistor Silicon NPN Epitaxial Planar Type 2SC3121 TV Tuner, UHF Oscillator Applications (common base) TV Tuner, UHF Converter Applications (common base) 2SC3121 Unit: mm High transition frequency: fT = 1500 MHz (typ.) Excellent linearity Maximum Ratings (Ta = 25°C) Characteristics Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Storage temperature range Symbol VCBO VC.