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                                                                          SGSF344
                                    HIGH VOLTAGE FASTSWITCHING NPN
                                                 POWER TRANSISTOR
s    HIGH VOLTAGE CAPABILITY
s    VERY HIGH SWITCHING SPEED
s    LOW BASE-DRIVE REQUIREMENTS

APPLICATIONS:
s SWITCH MODE POWER SUPPLIES
s HORIZONTAL DEFLECTION FOR COLOUR
  TVS AND MONITORS
                                                                                  3
DESCRIPTION                                                                   2
                                                                          1
The     SGSF344      is    manufactured    using
Multiepitaxial Mesa technology for cost-effective
high performance and uses a Hollow Emitter                       TO-220
structure to enhance switching speeds.
The SGSF series is designed for high speed
switching applications such as power supplies
and horizontal deflection circuits in TVs and
monitors.
                                                     INTERNAL SCHEMATIC DIAGRAM




ABSOLUTE MAXIMUM RATINGS
    Symb ol                       Parameter                    Valu e                 Un it
     V CES    Collector-Emitter Voltage (VBE = 0)              1200                    V
     V CEO    Collector-Emitter Voltage (IB = 0)                600                    V
     VEBO     Emitter-Base Voltage (IC = 0)                      7                     V
       IC     Collector Current                                  7                     A
      I CM    Collector Peak Current (tp < 5 ms)                12                     A
       IB     Base Current                                       5                     A
      I BM    Base Peak Current (tp < 5 ms)                      8                     A
                                          o
      P tot   T otal Dissipation at Tc = 25 C                   85                     W
                                                                                       o
     T s tg   Storage Temperature                            -65 to 150                    C
                                                                                       o
       Tj     Max. Operating Junction T emperature              150                        C

June 1997                                                                                      1/6
SGSF344

THERMAL DATA
                                                                                                            o
  R t hj-ca se   Thermal Resistance Junction-case                               Max          1.5                C/W


ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified)
  Symb ol              Parameter                            Test Cond ition s         Min.   Typ .   Max.   Un it
      I CES      Collector Cut-off            V CE = 1200 V                                          200        

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