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                                                                                                                       2STL1525

                                 Low voltage high performance NPN power transistor
                                                                                                                          Preliminary data


Features
    Very low collector-emitter saturation voltage
    High current gain characteristic
    Fast switching speed

Applications
    Emergency lighting
                                                                                                             TO-92L
    LED
    Motherboard and hard disk drive
    Mobile equipment
    Battery charger
    Voltage regulation                                                       Figure 1.         Internal schematic diagram

Description
The device 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.




Table 1.          Device summary
        Order codes                             Marking                                Package                         Packaging

          2STL1525                             2STL1525                                 TO-92L                           Bulk
        2STL1525-AP                            2STL1525                              TO-92L-AP                         Ammopack




July 2009                                                    Doc ID 16054 Rev 1                                                       1/6
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to            www.st.com   6
change without notice.
Electrical ratings                                                                2STL1525


1           Electrical ratings

            Table 2.    Absolute maximum ratings
              Symbol                              Parameter            Value         Unit

               VCEX     Collector-emitter voltage (VBE = -1.5 V)        95            V
               VCEO     Collector-emitter voltage (IB = 0)              25            V
               VEBO     Emitter-base voltage (IC = 0)                    5            V
                 IC     Collector current                                5            A
                ICM     Collector peak current (tP < 5 ms)              10            A
                 IB     Base current                                     1            A
                PTOT    Total dissipation at Tamb = 25 

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