KRC643T Datasheet and Replacement

   Type Designator: KRC643T
   SMD Transistor Code: NC
   Material of Transistor: Si
   Polarity: Pre-Biased-NPN
   Built in Bias Resistor R1 = 4.7 kOhm
   Built in Bias Resistor R2 = 4.7 kOhm
   Typical Resistor Ratio R1/R2 = 1
   Maximum Collector Power Dissipation (Pc): 0.9 W
   Maximum Collector-Emitter Voltage |Vce|: 50 V
   Maximum Collector Current |Ic max|: 0.8 A
   Max. Operating Junction Temperature (Tj): 150 °C
   Transition Frequency (ft): 200 MHz
   Forward Current Transfer Ratio (hFE), MIN: 47
   Noise Figure, dB: -
   Package: TSV
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