2N1978 Datasheet and Replacement

   Type Designator: 2N1978
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 30 W
   Maximum Collector-Base Voltage |Vcb|: 60 V
   Maximum Collector-Emitter Voltage |Vce|: 25 V
   Maximum Emitter-Base Voltage |Veb|: 5 V
   Maximum Collector Current |Ic max|: 1 A
   Max. Operating Junction Temperature (Tj): 200 °C
   Transition Frequency (ft): 40 MHz
   Forward Current Transfer Ratio (hFE), MIN: 20
   Noise Figure, dB: -
   Package: TO61
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