Service Manuals, User Guides, Schematic Diagrams or docs for : . Electronic Components Datasheets Active components Transistors ST bul743

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.

Image preview - the first page of the document

>> Download bul743 documenatation <<

Text preview - extract from the document
                                                                  High voltage fast-switching
                                                                       NPN power transistor

   Low spread of dynamic parameters
   High voltage capability
   Minimum lot-to-lot spread for reliable operation
   Very high switching speed
Applications                                                                           1

   Electronic ballast for fluorescent lighting up to                          TO-220
   256 W (8 x 32 W)
   Switch mode power supplies

Description                                               Figure 1.   Internal schematic diagram

The device is manufactured using the diffused
collector in planar technology adopting new and
enhanced high voltage structure. It has an
intrinsic ruggedness which enables the transistor
to withstand an high collector current level during
breakdown condition, without using the transil
protection usually necessary in typical converters
for lamp ballast.

Table 1.      Device summary
   Order code            Marking                       Package                     Packaging

     BUL743              BUL743                        TO-220                          Tube

May 2009                                     Doc ID 15263 Rev 3                                         1/10
Electrical ratings                                                                          BUL743

1           Electrical ratings

            Table 2.       Absolute maximum ratings
             Symbol                              Parameter                       Value        Unit

               VCES      Collector-emitter voltage (VBE = 0)                     1200          V
               VCEO      Collector-emitter voltage (IB = 0)                       500          V
               VEBO      Emitter-base voltage (IC = 0, IB = 6 A, tp < 10 ms)   V(BR)EBO        V
                IC       Collector current                                        12           A
                ICM      Collector peak current (tP < 5 ms)                       24           A
                 IB      Base current                                              6           A
                IBM      Base peak current (tP < 5 ms)                            12           A
                Ptot     Total dissipation at Tc = 25 

◦ Jabse Service Manual Search 2020 ◦ Jabse Pravopis ◦ Other service manual resources online : FixyaeServiceinfo