R 4A ! $*+ 3*56/ 5 , - ./01 %! *0 5"3 6 5".. 2 - 3 * *0 /".7 4! /"8 Dimensions in mm Heatsink For isolated power modules R 4A Publish Data Features !" # $! % ! &! ' % %! ($ ( ! 3 ! , - 9"6 4!*1 Dimensions in mm 3 %% 1 08-09-2003 SCT © by SEMIKRON R 4A Fig.3a Total thermal resistance vs.length, natural cooling Fig.3b Total thermal resistance vs.length, natural cooling Fig.3c Total thermal resistance vs.length, natural cooling Fig.6 Total thermal resistance vs.length, forced air cooling 2 08-09-2003 SCT © by SEMIKRON R 4A Dimensions in mm 5:% ; ! 4 3*56/ # !( ! $! % 3 08-09-2003 SCT © by SEMIKRON