ECG291 Datasheet and Replacement

   Type Designator: ECG291
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 40 W
   Maximum Collector-Base Voltage |Vcb|: 130 V
   Maximum Collector-Emitter Voltage |Vce|: 120 V
   Maximum Collector Current |Ic max|: 4 A
   Max. Operating Junction Temperature (Tj): 175 °C
   Transition Frequency (ft): 4 MHz
   Forward Current Transfer Ratio (hFE), MIN: 75
   Noise Figure, dB: -
   Package: TO220
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