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                                                                              BCY79

                                                  LOW NOISE AUDIO AMPLIFIERS

DESCRIPTION
The BCY79 is a silicon planar epitaxial PNP
transistors in Jedec TO-18 metal case. They are
designed for use in audio driver and low-noise
input stages.
The complementary NPN type is the BCY59.




                                                                     TO-18




                                                         INTERNAL SCHEMATIC DIAGRAM




ABSOLUTE MAXIMUM RATINGS
 Symbol                         Parameter                          Value          Unit
  V CES     Collector-Emitter Voltage (V BE = 0)                    -45               V
  V CEO     Collector-Emitter Voltage (I B = 0)                     -45               V
  V EBO     Emitter-Base Voltage (I C = 0)                           -5               V
    IC      Collector Current                                      -200               mA
   I CM     Collector Peak Current                                  -20               mA
                                             o
   P t ot   Total Dissipation at T amb  25 C                        390           mW
                                           o
                              at T case  45 C                        1            W
                                                                                      o
   T stg    St orage Temperature                                 -65 to 150               C
                                                                                      o
    Tj      Max. Operating Junction Temperature                     150                   C


November 1997                                                                                 1/6
BCY79

THERMAL DATA
                                                                                                                     o
  R t hj-ca se   Thermal Resistance Junction-Case                                      Max           150                 C/W
                                                                                                                     o
  R t hj- amb    Thermal Resistance Junction-Ambient                                   Max           450                 C/W


ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified)
  Symb ol              Parameter                            Test Cond ition s                 Min.   Typ .   Max.    Un it
      I CES      Collector Cut-off            V CE = -35 V                                            -2      -20        nA
                 Current (V BE = 0)           V CE = -45 V                                                   -100        nA
                                                                                   o
                                              V CE = -35 V          T amb = 150 C                             -10        

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