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bul704


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                                                                                        BUL704

                              High voltage fast-switching NPN Power Transistor

General features
    NPN Transistor
    High voltage capability
    Low spread of dynamic parameters
    Minimum lot-to-lot spread for reliable operation
    Very high switching speed
    In compliance with the 2002/93/EC European                                          3
                                                                                    2
    Directive                                                                   1
                                                                       TO-220
Description
The device is manufactured using high voltage
Multi-Epitaxial Planar technology for high
switching speeds and medium voltage capability.
                                                          Internal schematic diagram
It uses a Cellular Emitter structure with planar
edge termination to enhance switching speeds
while maintaining the wide RBSOA.

Applications
    Electronic ballast for fluorescent lighting
    Dedicated for PFC solution in HF ballast half-
    bridge voltage fed




Order codes
   Part Number          Marking                      Package                    Packing

     BUL704              BUL704                        TO-220                    Tube




May 2006                                             Rev 1                                       1/11
                                                                                            www.st.com   11
                                                                                                                   BUL704


Contents
1      Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2      Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
       2.1      Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
       2.2      Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3      Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4      Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10




2/11
BUL704                                                                   Electrical ratings


1        Electrical ratings

         Table 1.       Absolute maximum rating
          Symbol                              Parameter                Value         Unit

           VCES       Collector-emitter voltage (V BE = 0)              700           V
           VCEO       Collector-emitter voltage (IB = 0)                400           V
           VEBO       Emitter-base voltage (IC = 0)                     10            V

             IC       Collector current                                  4            A
            ICM       Collector peak current (tP < 5ms)                  8            A
             IB       Base current                                       2            A
            IBM       Base peak current (tP < 5ms)                       4            A

            Ptot      Total dissipation at T c = 25



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