BUY21A Datasheet and Replacement

   Type Designator: BUY21A
   Material of Transistor: Si
   Polarity: NPN
   Maximum Collector Power Dissipation (Pc): 85 W
   Maximum Collector-Base Voltage |Vcb|: 400 V
   Maximum Collector-Emitter Voltage |Vce|: 230 V
   Maximum Collector Current |Ic max|: 7 A
   Max. Operating Junction Temperature (Tj): 200 °C
   Transition Frequency (ft): 15 MHz
   Collector Capacitance (Cc): 200 pF
   Forward Current Transfer Ratio (hFE), MIN: 20
   Noise Figure, dB: -
   Package: TO3
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