40542 Datasheet and Replacement

   Type Designator: 40542
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 83 W
   Maximum Collector-Base Voltage |Vcb|: 50 V
   Maximum Collector-Emitter Voltage |Vce|: 45 V
   Maximum Emitter-Base Voltage |Veb|: 5 V
   Maximum Collector Current |Ic max|: 6 A
   Max. Operating Junction Temperature (Tj): 175 °C
   Transition Frequency (ft): 0.8 MHz
   Forward Current Transfer Ratio (hFE), MIN: 80
   Noise Figure, dB: -
   Package: TO3
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