This part is a kind of semiconductor called W11NK100Z.

Function of this product has STW11NK100Z.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

STW11NK100Z N-CHANNEL 1000V - 1.1Ω - 8.3A TO-247 Zener-Protected SuperMESH™Power MOSFET TYPE VDSS RDS(on) ID Pw STW11NK100Z 1000 V < 1.38 Ω 8.3 A 230 W s TYPICAL RDS(on) = 1.1 Ω s EXTREMELY HIGH dv/dt CAPABILITY s 100% AVALANCHE TESTED s GATE CHARGE MINIMIZED s VERY LOW INTRINSIC CAPACITANCES s VERY GOOD MANUFACTURING REPEATIBILITY 3 2 1 TO-247 DESCRIPTION The SuperMESH™ series is obtained through an extreme optimization of ST’s well established stripbased PowerMESH™ layout. In addition to pushing on-resistance significantly down, special care is taken to ensure a very good dv/dt capability for the most demanding applications. Such series complements ST full range of high voltage MOSFETs including revolutionary MDmesh™ products. INTERNAL SCHEMATIC DIAGRAM APPLICAT [ ... ]

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