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                                                                                               STW18NB40
                                                                                              STH18NB40FI
             N-CHANNEL 400V - 0.19  - 18.4 A TO-247/ISOWATT218
                                           PowerMeshTM MOSFET
                                                                                                              PRELIMINARY DATA
         TYPE               VDSS         RDS(on)            ID

    STW18NB40              400 V        < 0.26         18.4 A
    STH18NB40FI            400 V        < 0.26         12.4 A
s    TYPICAL RDS(on) = 0.19 
s    EXTREMELY HIGH dv/dt CAPABILITY
s    100% AVALANCHE TESTED                                                                                                        3
                                                                                                  3
s    VERY LOW INTRINSIC CAPACITANCES                                                          2                               2
                                                                                          1                               1
s    GATE CHARGE MINIMIZED
                                                                            TO-247                             ISOWATT218
DESCRIPTION
Using the latest high voltage MESH OVERLAYTM
process, STMicroelectronics has designed an ad-
vanced family of power MOSFETs with outstanding
performances. The new patent pending strip layout
coupled with the Company's proprieraty edge termi-
nation structure, gives the lowest R DS(on) per area,                INTERNAL SCHEMATIC DIAGRAM
exceptional avalanche and dv/dt capabilities and
unrivalled gate charge and switching characteris-
tics.

APPLICATIONS
s HIGH CURRENT, HIGH SPEED SWITCHING

s SWITH MODE POWER SUPPLIES (SMPS)

s DC-AC CONVERTERS FOR WELDING

  EQUIPMENT AND UNINTERRUPTIBLE
  POWER SUPPLIES AND MOTOR DRIVE

ABSOLUTE MAXIMUM RATINGS
     Symbol                                     Parameter                                         Value                       Unit
                                                                               STW18NB40                    STH18NB40FI
       VDS        Drain-source Voltage (VGS = 0)                                                      400                      V
      VDGR        Drain-gate Voltage (RGS = 20 k)                                                     400                      V
       VGS        Gate- source Voltage                                                                

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