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                                                                                                                          STD2805

                                         Low voltage fast-switching PNP power transistor
                                                                                                                                 Preliminary Data


Features
    Very low collector to emitter saturation voltage
    High current gain characteristic
    Fast-switching speed
    Surface-mounting DPAK (TO-252) power
                                                                                                        3                                           3
    package in tape & reel (suffix "T4)                                                                                                         2
                                                                                                  1                                         1
    Through-hole IPAK (TO-251) power package
    in tube (suffix "-1")                                                                 TO-252                              TO-251
                                                                                           DPAK                                  IPAK

Description                                                                             (suffix "T4")                       (suffix "-1")

The device is manufactured in PNP Planar
technology by using a "Base Island" layout. The
resulting transistor shows exceptional high gain
performance coupled with very low saturation                                 Figure 1.         Internal schematic diagram
voltage.

Applications
    CCFL drivers
    Voltage regulators
    Relay drivers
    High efficiency low voltage switching
    applications




Table 1.         Devices summary
   Order codes                  Marking                               Package                                          Packaging

   STD2805T4                     D2805                                  DPAK                                           Tape & reel
   STD2805-1                     D2805                                   IPAK                                             Tube




June 2007                                                             Rev 1                                                                             1/9
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to                    www.st.com            9
change without notice.
Electrical ratings                                                                  STD2805


1           Electrical ratings

            Table 1.       Absolute maximum rating
             Symbol                              Parameter               Value        Unit

               VCBO      Collector-base voltage (IE =0)                   -60          V
               VCEO      Collector-emitter voltage (IB =0)                -60          V
               VEBO      Emitter-base voltage (IC =0)                     -6           V

                IC       Collector current                                -5           A
               ICM       Collector peak current (tP < 5ms)                -10          A
                IB       Base current                                     -2           A
               Ptot      Total dissipation at T c  25

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