MMBR4957 Datasheet and Replacement

   Type Designator: MMBR4957
   SMD Transistor Code: 7F
   Material of Transistor: Si
   Polarity: PNP
   Maximum Collector Power Dissipation (Pc): 0.278 W
   Maximum Collector-Base Voltage |Vcb|: 30 V
   Maximum Collector-Emitter Voltage |Vce|: 30 V
   Maximum Emitter-Base Voltage |Veb|: 3 V
   Maximum Collector Current |Ic max|: 0.03 A
   Max. Operating Junction Temperature (Tj): 150 °C
   Transition Frequency (ft): 1200 MHz
   Collector Capacitance (Cc): 0.8 pF
   Forward Current Transfer Ratio (hFE), MIN: 20
   Noise Figure, dB: -
   Package: SOT23
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