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2N2257 Specs and Replacement

   Type Designator: 2N2257
   Material of Transistor: Si
   Polarity: NPN

Absolute Maximum Ratings

   Maximum Collector Power Dissipation (Pc): 0.3 W
   Maximum Collector-Base Voltage |Vcb|: 7 V
   Maximum Collector-Emitter Voltage |Vce|: 7 V
   Maximum Emitter-Base Voltage |Veb|: 1 V
   Maximum Collector Current |Ic max|: 0.1 A
   Max. Operating Junction Temperature (Tj): 175 °C

Electrical Characteristics

   Transition Frequency (ft): 250 MHz
   Collector Capacitance (Cc): 8 pF
   Forward Current Transfer Ratio (hFE), MIN: 40
   Noise Figure, dB: -
   Package: TO18
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