2SB251A Datasheet and Replacement

   Type Designator: 2SB251A
   Material of Transistor: Ge
   Polarity: PNP
   Maximum Collector Power Dissipation (Pc): 54 W
   Maximum Collector-Base Voltage |Vcb|: 60 V
   Maximum Collector-Emitter Voltage |Vce|: 40 V
   Maximum Emitter-Base Voltage |Veb|: 20 V
   Maximum Collector Current |Ic max|: 5 A
   Max. Operating Junction Temperature (Tj): 85 °C
   Transition Frequency (ft): 0.15 MHz
   Forward Current Transfer Ratio (hFE), MIN: 40
   Noise Figure, dB: -
   Package: TO3
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