2SD257 is a silicon NPN power transistor manufactured by NEC. It is designed for use in power amplifier and switching applications. Description: The 2SD257 is a silicon NPN power transistor with high voltage and high current capabilities. It is designed for use in power amplifier and switching applications. Features: High voltage: VCEO = 800V High current: IC = 5A Low saturation voltage: VCE(sat) = 1.2V High gain: hFE = 200 Low noise Low power dissipation Applications: High voltage switching High voltage power amplifiers DC-DC converters Motor control Solenoid drivers High voltage power supplies(For reference only)
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