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                                                                                            BD241A
                                                                                            BD241C

                                                                        NPN power transistors

Features                                                .

   NPN transistors

Applications
   Audio, general purpose switching and amplifier
   transistors
                                                                                            3
                                                                                        2
Description                                                                         1


The devices are manufactured in Planar                                     TO-220
technology with "Base Island" layout. The
resulting transistor shows exceptional high gain
                                                        Figure 1.   Internal schematic diagram
performance coupled with very low saturation
voltage. The PNP types are BD242A and
BD242C.




Table 1.      Device summary
       Order codes                  Marking                   Package                   Packaging

            BD241A                  BD241A                     TO-220                           Tube
            BD241C                  BD241C                     TO-220                           Tube




July 2007                                           Rev 2                                                    1/9
                                                                                                       www.st.com   9
Absolute maximum ratings                                                   BD241A BD241C


1         Absolute maximum ratings

          Table 2.     Absolute maximum ratings
                                                                    Value
           Symbol                          Parameter                                Unit
                                                             BD241A        BD241C

            VCER     Collector-emitter voltage (RBE = 100)     70           115      V
            VCEO     Collector-emitter voltage (IB = 0)        60           100      V
            VEBO     Emitter-base voltage (IC = 0)                    5              V
              IC     Collector current                                3              A
             ICM     Collector peak current (tp < ms)                 5              A
              IB     Base current                                     1              A
            PTOT     Total dissipation at Tcase = 25



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