The application of the heat sink was nevertheless frickeliger than I thought, because I did not know exactly where the adhesive of the heat sink as are now, is to say, when pulling off the protection I had to go, "risk", because it just was not visible and no "Help" (small overlap or so) was given.
Otherwise the product can fully recommend extent once. In my enclosed with Case equipment the heatsink but have not had a major effect, in idle mode is less than 1 ° C difference in load operation then already rather 2-3 ° C.