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                                                    2N4991
                                        Silicon bilateral switch (SBS)
                                              in package TO-92
                    0.45max
   0.7max
                                                      1
                          5.2            2.5          2
            1.6                  5.2           14.5   3
                  4.2




   Pinouts:
   1- Anode II, 2- Gate, 3- Anode I
                                                           Ratings
       Symbol                                         Parameter, units                         Limits
            IT(rms)              DC forward anode current, mA                                  200
              Igm                DC gate current, mA                                             5
            IT(sm)               Peak recurrent forward current, A,
                                 (1% duty cycle, 10

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