KT639B1 Datasheet and Replacement

   Type Designator: KT639B1
   SMD Transistor Code: КТ639Б1
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 1 W
   Maximum Collector-Base Voltage |Vcb|: 45 V
   Maximum Collector-Emitter Voltage |Vce|: 15 V
   Maximum Emitter-Base Voltage |Veb|: 5 V
   Maximum Collector Current |Ic max|: 1.5 A
   Max. Operating Junction Temperature (Tj): 200 °C
   Transition Frequency (ft): 80 MHz
   Collector Capacitance (Cc): 50 pF
   Forward Current Transfer Ratio (hFE), MIN: 63
   Noise Figure, dB: -
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