At first blush I would have thought that a heatsink would be configured to mate intimately with the heat-generating component for maximum heat transfer.
Yet, many of these heatsinks have a cutout just where you'd figure there should be more contact with the body of the unit... below the tab.
What's the thinking?
Yet, many of these heatsinks have a cutout just where you'd figure there should be more contact with the body of the unit... below the tab.
What's the thinking?
Sorry, I did mean to
Again, it seems to me that the full body length of the device should be against the heatsink.
Again, it seems to me that the full body length of the device should be against the heatsink.
Do you mean like these?
I've wondered the same thing, it seems kind of counter productive to achieving the desired results.
Mike
I've wondered the same thing, it seems kind of counter productive to achieving the desired results.
Mike
I suspect these particular heat sinks are meant for a lesser used package (neither TO-220 nor TO-247) that has a thin metal tab extending out of the middle of the part. I cannot remember the number of it though.
Those heatsinks are tiny and handle a few watts at most, so their thermal impedance to the die isn't very crucial.