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                                                                                BUV27

                     MEDIUM POWER NPN SILICON TRANSISTOR
s   SGS-THOMSON PREFERRED SALESTYPE
s   NPN TRANSISTOR
s   FAST SWITCHING SPEED
s   LOW COLLECTOR EMITTER SATURATION

APPLICATIONS
s SWITCHING REGULATORS
s MOTOR CONTROL

                                                                                3
DESCRIPTION                                                                 2
                                                                        1
The BUV27 is a Multiepitaxial Planar NPN
Transistor in TO-220 package. It is intended for
use in high frequency and efficency converters,               TO-220
switching regulators and motor control.




                                                   INTERNAL SCHEMATIC DIAGRAM




ABSOLUTE MAXIMUM RATINGS
    Symbol                       Parameter                  Value                   Unit
     V CBO   Collector-base Voltage (I E = 0)                240                     V
     V CEO   Collector-Emitter Voltage (I B = 0)             120                     V
     V EBO   Emitter-Base Voltage (I C = 0)                   7                      V
      IC     Collector Current                                12                     A
     I CM    Collector Peak Current                           20                     A
      IB     Base Current                                     4                      A
     I BM    Base Peak Current                                6                      A
     P tot   Total Dissipation at Tc < 25 o C                 85                     W
     P tot   Total Dissipation at T c < 60 o C                65                     W
                                                                                    o
     T stg   Storage Temperature                          -65 to +175                   C
                                                                                    o
      Tj     Max. Operating Junction Temperature             175                        C



June 1997                                                                                   1/4
BUV27

THERMAL DATA
                                                                                                            o
  R thj-case   Thermal Resistance Junction-case                                  Max          1.76              C/W


ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified)
  Symbol               Parameter                            Test Conditions            Min.   Typ.   Max.   Unit
                                                                       o
      I CER    Collector Cut-off              V CE = 240V T c = 125 C                                 3     mA
               Current (R BE = 50)
                                                                                  o
      I CEX    Collector Cut-off              V CE = 240V VBE = -1.5V T c = 125 C                     1     mA
               Current
      I EBO    Emitter Cut-off Current        V EB = 5 V                                              1     mA
               (I C = 0)
 V CEO(sus)  Collector-Emitter                I C = 0.2 A         L = 25mH             120                      V
             Sustaining Voltage
      V EBO    Emitter-Base Voltage           I E = 50mA                                7             30        V
               (I C = 0)
  V CE(sat)    Collector-Emitter              I C = 4A           I B = 0.4A                          0.7        V
               Saturation Voltage             I C = 8A           I B = 0.8A                          1.5        V
  V BE(sat)    Base-Emitter                   I C = 8A           I B = 0.8A                           2         V
               Saturation Voltage
               RESISTIVE LOAD
       t on    Turn-on Time                   V CC = 90V          I C = 8A                     0.4    0.8       ms
        ts     Storage Time                   V BE = - 6V         I B1 = 0.8A                  0.5    1.2       

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