The 2SC2371 is a Silicon NPN power transistors, TO-126 package, High voltage 300V 100mA high frequency. For TV chroma output and vertical output applications.
The 2SC2553 is a Material of Transistor-Si Polarity: NPN Maximum Collector Power Dissipation 40W Maximum Collector-Base Voltage 500V Maximum Collector-Emitter Voltage 400V Maximum Emitter-Base Voltage 7V Maximum Collector Current 5A Max.
The 2SC3198 is a 60V 150mA 400mW NPN General Purpose Transistor TO-92 Package. This NPN Silicon Epitaxial Planar Transistor for switching and AF amplifier applications.
The 2SC3209 is a NPN Maximum Collector 2W Maximum Collector Base Voltage 300 V Maximum Collector Current 0.2 A Max. Operating Junction Temperature 125 °C Transition Frequency 80 MHz Forward Current Transfer Ratio 60.