BLW21 Datasheet and Replacement

   Type Designator: BLW21
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 80 W
   Maximum Collector-Base Voltage |Vcb|: 36 V
   Maximum Collector-Emitter Voltage |Vce|: 18 V
   Maximum Emitter-Base Voltage |Veb|: 4 V
   Maximum Collector Current |Ic max|: 7 A
   Max. Operating Junction Temperature (Tj): 150 °C
   Transition Frequency (ft): 20 MHz
   Forward Current Transfer Ratio (hFE), MIN: 10
   Noise Figure, dB: -
   Package: TO128
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