TOSHIBA Transistor Silicon NPN Epitaxial Type (PCT process) 2SC3437 Ultra High Speed Switching Applications Computer, Counter Applications 2SC3437 Unit: mm High transition frequency: fT = 400 MHz (typ.) Low saturation voltage: VCE (sat) = 0.3 V (max) High speed switching time: tstg = 15 ns (typ.) Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Collector-base voltage VCBO 40 V Collector-emitter voltage VCEO 15 V Emitter-base voltag.