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2str1215


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                                                                                    2STR1215

                                Low voltage fast-switching NPN power transistor


Features
   Very low collector-emitter saturation voltage
   High current gain characteristic
                                                                       3
   Fast switching speed
   Miniature SOT-23 plastic package for surface
                                                                                     2
   mounting circuits
                                                                               1

Applications
                                                                           SOT-23
   LED
   Battery charger
   Voltage and relay driver
   Voltage regulation
                                                       Figure 1.   Internal schematic diagram

Description
The 2STR1215 is a NPN transistor manufactured
using new "PB-HCD" (power bipolar high current
density) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
The complementary PNP is the 2STR2215.




Table 1.       Device summary
   Order code           Marking                    Package                         Packaging

   2STR1215               115                      SOT-23                      Tape and reel




January 2009                                       Rev 4                                             1/9
                                                                                               www.st.com   9
Electrical ratings                                                                2STR1215


1           Electrical ratings

            Table 2.      Absolute maximum ratings
             Symbol                            Parameter               Value         Unit

               VCBO    Collector-base voltage (IE = 0)                  15            V
               VCEO    Collector-emitter voltage (IB = 0)               15            V
               VEBO    Emitter-base voltage (IC = 0)                     5            V
                IC     Collector current                                1.5           A
               ICM     Collector peak current (tP < 5 ms)                3            A
               Ptot    Total dissipation at Tamb = 25 



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