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                                                                                    STW3040

                             High voltage fast-switching NPN power transistor

Features
                                                           .




   High voltage capability
   High DC current gain
   Minimum lot-to-lot spread for reliable operation
   Wide safe operating areas (forward and
   reverse biased)
                                                                                            3
                                                                                        2
                                                                                    1
Applications
                                                                           TO-247
   Switching mode power supplies
                                                       Figure 1.    Internal schematic diagram
Description
The STW3040 is manufactured using diffused
collector in planar technology adopting base
island layout. The device is designed for use in
SMPS and desktop power supply.




Table 1.       Device summary
       Order code                   Marking                    Package                  Packaging

           STW3040                   W3040                     TO-247                           Tube




October 2008                                       Rev 3                                                    1/10
                                                                                                       www.st.com   10
Absolute maximum ratings                                                                STW3040


1         Absolute maximum ratings

          Table 2.         Absolute maximum ratings
           Symbol                            Parameter                       Value         Unit

            VCES         Collector-emitter voltage (VCE = 0)                  700           V
            VCEO         Collector-emitter voltage (IB = 0)                   400           V
            VEBO         Emitter-base voltage (IC = 0)                         9            V
              IC         Collector current                                    30            A
             ICM         Collector peak current                               50            A
              IB         Base current                                         10            A
             IBM         Base peak current                                    15            A
            PTOT         Total dissipation at Tc = 25

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