BD661K Datasheet and Replacement

   Type Designator: BD661K
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 50 W
   Maximum Collector-Base Voltage |Vcb|: 32 V
   Maximum Collector-Emitter Voltage |Vce|: 32 V
   Maximum Emitter-Base Voltage |Veb|: 5 V
   Maximum Collector Current |Ic max|: 4 A
   Max. Operating Junction Temperature (Tj): 150 °C
   Forward Current Transfer Ratio (hFE), MIN: 15
   Noise Figure, dB: -
   Package: TO220
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