sml40w44 transistor of datasheet pdf

SML40W44
Manufacturer : Semelab(Magnatec)
Description : N-Channel Enhancement Mode High Voltage Power MOSFET(Vdss:400V,Id(cont):44A,Rds(on):0.082?)(N????????????????OS??????(Vdss:400V,Id(cont):44A,Rds(on):0.082?))